Saturday
April 19, 2014

Search: A block of mass m1 = 4.40 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, frictionless pulley to a second block of mass m2 = 2.50 kg hanging vertically (Fig. 5-41).

Number of results: 65,454

Physics
In the figure below, m1 = 3.8 kg, m2 = 5.2 kg, and the coefficient of kinetic friction between the inclined plane and the 3.8-kg block is μk = 0.3. Find the magnitude of the acceleration of the masses and the tension in the cord.
Wednesday, September 26, 2012 at 8:24pm by Tara

physics
A 4-kg block is connected by means of a massless rope to a 2-kg block in the figure. If the coeficient of sliding friction between the 4 kg mass and the table is 0.150, find the acceleration of the system, and the tention in the connecting cable.
Tuesday, November 15, 2011 at 3:24pm by Anonymous

Physics
I'm also kind of lost on how to draw the free body diagram of the first block the force F points to the right right? what points to the left <-----| m1 |------> F what points to the left I know the rest for m1 i think If i drew force F corectly on block m1 and how does ...
Saturday, July 11, 2009 at 10:11pm by Physics

Physics
Two blocks of masses m1 = 2.00 kg and m2 = 4.50 kg are each released from rest at a height of y = 5.80 m on a frictionless track, as shown in the figure below, and undergo an elastic head-on collision. (a) Determine the velocity of each block just before the collision. Let the...
Wednesday, November 7, 2012 at 12:31pm by Corey

physics
Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and α = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is μk = 0.40. The mass m2 is moving up at a constant speed. (a) What is the magnitude ...
Tuesday, February 19, 2013 at 12:24pm by Alli

physical
A bullet of mass 0.01 kg is moving horizontally with a speed of 100 m/s when it hits a block of mass 2 kg that is at rest on a horizontal surface with a coefficient of friction of 0.4. After the collision the bullet becomes embedded in the block.
Thursday, January 26, 2012 at 8:58am by dhaval

Physic
A bullet with a mass of 4.0 g and a speed of 736 m/s is fired at a block of wood with a mass of 0.075 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, the speed of the ...
Friday, October 19, 2012 at 12:12pm by Hey

physics
Three blocks are connected on the table as shown below. The coefficient of kinetic friction between the block of mass m2 and the table is 0.400. The objects have masses of m1 = 3.00 kg, m2 = 1.45 kg, and m3 = 1.90 kg, and the pulleys are frictionless. Determine the ...
Saturday, October 9, 2010 at 12:34am by Amber

Physics
A 1.2 kg block is attached to a horizontal 23 N/m spring and resting on a frictionless horizontal surface. The block is set oscillating with amplitude 10 cm and phase constant π/2. A 2nd block with mass 0.8 kg moving at 1.7 m/s collides inelastically (the blocks stick ...
Thursday, May 24, 2012 at 5:15am by Erick

physics
Use the Newton Universal Law of gravity. F = G*M1*M2/R^2 Look up the value of G if you don't know it. Make sure M1 and M2 are both in kg. The lead ball mass is 0.100 kg
Wednesday, February 3, 2010 at 7:04pm by drwls

Physics
A 12.0 kg block sits on a frictionless table. On top of this block is placed a 5.00 kg block. The coefficient of static friction between the two blocks is 0.70. a) What is the maximum force that can be applied horizontally to the 5.00 kg block before it slips? b) What is the ...
Wednesday, July 25, 2012 at 8:21pm by Zac

physics
A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 10.5 g, the mass of the block is 10.5 kg the bullets impact ...
Wednesday, March 10, 2010 at 12:58pm by Anonymous

physics
A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 10.5 g, the mass of the block is 10.5 kg the bullets impact ...
Wednesday, March 10, 2010 at 2:27pm by esther

physics
The mass m2 is larger than m1 by a factor 3.30/1.50 = 2.2 The combined mass m1 + m2 is therefore m1 + 2.2m1 = 3.2 m1 When the same force F acts, acceleration will be ne 3.2 tikmes less than when it acted on m1, or a = 3.30 m/s^2/3.2 = 1.03 m/s^2
Thursday, November 20, 2008 at 1:50am by drwls

Physics
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 9.710−2 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits the block, the ...
Tuesday, August 3, 2010 at 11:26pm by Todd

physics
block 1 has mass m1 = 480 g, block 2 has mass m2 = 540 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. When released from rest, block 2 falls 76 cm in 5.2 s (without the cord slipping on the pulley). What is the pulley's rotational inertia? ...
Monday, April 1, 2013 at 8:04am by ANS

physics
block 1 has mass m1 = 480 g, block 2 has mass m2 = 540 g, and the pulley is on a frictionless horizontal axle and has radius R = 5.2 cm. When released from rest, block 2 falls 76 cm in 5.2 s (without the cord slipping on the pulley). What is the pulley's rotational inertia? ...
Tuesday, April 2, 2013 at 5:30am by Ashley

physics
A 4.0-kg block is stacked on top of a 12.0-kg block, which is accelerating along a horizontal table at a = 5.2m/s2 . Let u=uk=us. (a) What minimum coefficient of friction u between the two blocks will prevent the 4.0-kg block from sliding off? (b) If u is only half this ...
Tuesday, November 20, 2012 at 2:12pm by Anonymous

8.01x Classical Mechanics
Sliding Blocks (14 points possible) A small cube of mass 1.0 kg slides down a circular and frictionless track of radius 0.6 m cut into a large block of mass 4.0 kg as shown in the figure below. The large block rests on a horizontal and frictionless table. The cube and the ...
Saturday, January 11, 2014 at 2:56am by Anonymous

Physics
A heavy wooden block rests on a flat table and a high-speed bullet is fired horizontally into the block, the bullet stopping in it. How far will the block slide before coming to a stop? The mass of the bullet is 9.5 g, the mass of the block is 10.5 kg, the bullet's impact ...
Wednesday, November 6, 2013 at 7:34pm by jonathan

physics
the system is in static equilibrium. The coefficient of static friction between the block and the table's surface is = 1/3. The mass of the block that is hanging down is n1 Kg. The tangent of the angle shown in the figure is tan theta = n2. What is the minimum value of mass, ...
Saturday, January 14, 2012 at 4:35pm by frank

physics
The system shown below consists of a block of mass M = 4.4 kg resting on a frictionless horizontal ledge. This block is attached to a string that passes over a pulley, and the other end of the string is attached to a hanging block of mass m = 1.9 kg. The pulley is a uniform ...
Friday, March 16, 2012 at 12:52am by Nick

Physics
Consider two masses m1 and m2 connected by a thin string. Assume the following values: m1 = 4.18 kg and m2 = 1.00 kg. Ignore friction and mass of the string. 1) what is the acceleration of the 2 masses? 2)What should be the value of mass m1 to get the largest possible value of...
Thursday, September 1, 2011 at 10:50pm by Logan

Physics
Consider two blocks that are resting one on top of the other. The lower block has mass m2 = 3.5 kg and is resting on a frictionless table. The upper block has mass m1 = 2.7 kg. Suppose the coefficient of static friction between the two blocks is given by μs = 0.5. Part a...
Thursday, October 10, 2013 at 1:33am by Anonymous

Physics
Two masses are held while suspended on a frictionless pulley.Their masses are 0.250 kg and 0.200 kg. a. Compute for the acceleration of the masses once they are released? b.Find the tension on the string m1 accelerates upward and m2 downward Let a be the acceleration of m1 ...
Sunday, September 10, 2006 at 8:43am by fluffy

physics
Three blocks on a frictionless surface are connected by massless strings, with M1 = 1.40 kg, M2 = 2.40 kg, and M3 = 3.60 kg. Due to the force F acting on M3, as shown, the system accelerates to the right. Given that T1 is 3.50 N, calculate T2
Wednesday, February 12, 2014 at 10:46am by Carly

physics
A 0.190 kg projectile is fired with a velocity of +705 m/s at a 2.00 kg wooden block that rests on a frictionless table. The velocity of the block, immediately after the projectile passes through it, is +40.0 m/s. Find the velocity with which the projectile exits from the block.
Tuesday, January 17, 2012 at 6:43pm by emma

Physics URGENT!!!
m=2 kg , m1=70+2=72 kg, m2= 50 kg v =9 m/s, Δh=4 m, h=20 m (a) m1v =(m1+m)v1 v1= m1/(m1+m) (b) KE1+ΔPE=KE2 (m1+m)v1²/2+(m1+m)gΔh=(m1+m)v2²/2 v2=sqrt(v1²+2gΔh) (c) (m1+m)v2= (m1+m2+m) v3 v3 = (m1+m)v2/(m1+m2+m) (d) (m1+m2+m)v3²...
Monday, October 15, 2012 at 5:37pm by Elena

physics
A 20 g bullet moving horizontally with a speed v hits a 2-kg block of wood resting on a table. After hitting the block the bullet is embedded in the block of wood and the block and the bullet moves a distance of 40 cm before it stops. If the coefficient of friction between the...
Monday, July 23, 2012 at 12:55pm by Edward

physics
A block of a mass of 1 kg rests on the inclined surface of a wedge of a mass of 2.2 kg. The wedge is acted upon by a horizontal force F and slides on a frictionless surface. The acceleration of gravity is 9.81 m/s^2. If the coefficient of static friction between the wedge and ...
Tuesday, July 12, 2011 at 12:27pm by alexa

physics(IMPORTANT)
Two skaters of mass m1=50 kg and m2=70 kg are standing motionless on a horizontal ice surface. They are initially a distance L= 8.0 meters apart. They hold a massless rope between them. After pulling the rope, the skater of mass m1 has moved a distance l= 2.0 meters away from ...
Friday, November 1, 2013 at 9:21am by anonymous

Physics problem.. :/
A 8.7 kg block is on a frictionless surface. It is connected by a string over a pulley to a 8.6 kg hanging mass. Find the acceleration of the block. ?
Thursday, November 17, 2011 at 6:28pm by Kat

physics
In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.8 m and then collides with stationary block 2, which has mass m2 = 2m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction μk is 0.3 and...
Wednesday, November 13, 2013 at 4:38pm by kristy

physics
In the following figure m_1 = 20.0kg kg and alpha = 50.9 ∘ ^\circ. The coefficient of kinetic friction between the block and the incline is k = 0.40 What must be the mass m 2 of the hanging block if it is to descend 9.00m m in the first 3.00s s after the system is ...
Thursday, July 4, 2013 at 1:49pm by Bob

physics
A bullet of mass 8.0 g is fired horizontally into a 2.2 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.40. The bullet comes to rest in the block, which moves 2.30 m. (a) What is the speed of the block ...
Friday, November 6, 2009 at 4:21pm by Brian

honors physics
A 3.2 kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. The elastic potential energy of this spring/mass sytem is 2.1 J. What is the elastic potential energy of the system when the 3.2 kg block is replaced by a 5.3 kg block?
Wednesday, December 1, 2010 at 8:10pm by tom

physics
A block with mass m =7.3 kg is hung from a vertical spring. When the mass hangs in equilibrium, the spring stretches x = 0.21 m. While at this equilibrium position, the mass is then given an initial push downward at v = 4.5 m/s. The block oscillates on the spring without ...
Monday, February 6, 2012 at 1:28pm by Chad

Physics help please
the F of gravity is equal to (G*m1*m2)/(d^2) where g is the gravitational constant (6.673e-11 N*m^2/kg^2, notice the units are m not km), m1 is the mass of one object, m2 is the mass of the other object, and d= the distance between the centers of each object. in this situation...
Friday, November 25, 2011 at 8:36pm by Cody

physics
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.104 kg, initially moves to the right at a speed of 4.70 m/s, while the second block, of mass 0.208 kg, is initially to the left of the first block and moving to the right at 6.50 m/s. ...
Thursday, November 29, 2012 at 8:40pm by Anthony

Physics
A bullet of mass 1.910−3kg embeds itself in a wooden block with mass 0.987kg, which then compresses a spring (k=120N/m) by a distance 3.510−2m before coming to rest. The coefficient of kinetic friction between the block and table is 0.42. What fraction of ...
Friday, October 8, 2010 at 6:39pm by Bartholomew

Physics
A block of mass 5.53 kg lies on a frictionless horizontal surface. The block is connected by a cord passing a. over a pulley to another block of mass 2.25 kg which hangs in the air. Assume the cord to be light (massless and weightless) and unstretchable and the the pulley to ...
Friday, February 21, 2014 at 8:05pm by Emeera

PHYSICS
Energy is conserved during the upward swing. Therefore (M+m)V = (M+m)gH and V = gH = 0.98 m/s is the block velocity just after the bullet (mass m) is embedded inside the block (mass M). The momentum at that time is (M+m)V = (0.505 kg)*V = 0.495 kg m/s I do not agree with the 0...
Wednesday, October 31, 2012 at 2:48am by drwls

physics
A 10.0-kg block is at rest on a horizontal floor. If you push horizontally on the 10.0-kg block with a force of 20.0 N, it just starts to move. (a) What is the coefficient of static friction? b) A 12.0-kg block is stacked on top of the 10.0-kg block. What is the magnitude F of...
Thursday, February 17, 2011 at 10:22am by melad

physic
The figure shows a block P on top of another block Q. The two blocks are connected by a string which passes over a fixed smooth pulley. The mass of P is 0.20 kg and the mass of Q is 0.50 kg. The coefficient of static friction between blocks P and Q is 0.5 and between Q and the...
Wednesday, August 8, 2012 at 11:18pm by Anonymous

Physics
A string going over a massless frictionless pulley connects two blocks of masses 6.4 kg and 13 kg. As shown on the picture below, the 6.4 kg block lies on a 32◦ incline; the coefficient of kinetic friction between the block and the incline is μ= 0.3. The 13 kg block...
Friday, February 21, 2014 at 8:36pm by mallak

Physics
A string going over a massless frictionless pulley connects two blocks of masses 6.4 kg and 13 kg. As shown on the picture below, the 6.4 kg block lies on a 32◦ incline; the coefficient of kinetic friction between the block and the incline is μ= 0.3. The 13 kg block...
Thursday, March 6, 2014 at 3:12pm by Emeera

PHYSICS
A small block of mass 0.5 kg is released from rest at the top of a ramp of mass 3 kg that sits on a frictionless horizonal surface. When the block leaves the ramp it has a speed of 4 m.s a)what is the recoil velocity of the ramp b) how high is the ramp?
Wednesday, April 17, 2013 at 1:16pm by HELP

Physics
Two steel blocks are at rest on a frictionless horizontal surface. Block X has a mas of 3.0 kg ans is attacthed by means of a light taut string to block Y that has a mass of 12 kg. A force of 45 N (E) is applied to block x. Calculate the force block Y exerts on block x. I don'...
Friday, April 17, 2009 at 4:55am by Lena

Physics
In the figure below, m1 = 3.1 kg, m2 = 5.8 kg, and the coefficient of kinetic friction between the inclined plane and the 3.1-kg block is μk = 0.27. Find the magnitude of the acceleration of the masses and the tension in the cord. The incline is at at 30 angle.
Wednesday, October 12, 2011 at 5:45pm by Jimmy

physics help please
The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The 3 kg block lies on a rough horizontal surface with a constant coefficient of kinetic friction 0:3. The hanging block has a mass of 8 kg. The system starts from ...
Thursday, March 1, 2007 at 6:18pm by kitt

Physics 203
A 4 kg block resting on a frictionless horizontal ledge is attached to a string that passes over a pulley and is attached to a hanging 2 kg block. The pulley is a uniform disk of radius 13.0 cm and mass 0.50 kg. (a) Find the speed of the 2 kg block after it falls from rest a ...
Wednesday, April 6, 2011 at 11:14am by Kayla

physics
Two blocks with mass m1 = 4.2 kg and m2 = 4.7 kg are connected by a massless string over a frictionless and massless pulley. The angle of the incline is equal to 27.5. The kinetic coefficient of friction between m1 and the incline is 0.28. What is the minimum value of the ...
Saturday, December 4, 2010 at 8:28pm by sky

Physics (dynamics)
A 47.0 kg slab rests on a frictionless floor. A 18.0 kg block rests on top of the slab. The static coefficient of friction between the block and the slab is 0.50, while the kinetic coefficient of friction is 0.40. The top block is acted upon by a force of 120 N. What is the ...
Saturday, March 10, 2012 at 9:41pm by Andrew

physics
In Figure block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.10 m and then collides with stationary block 2, which has mass m2 = 5.00m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction μk is 0.550 ...
Wednesday, February 27, 2008 at 11:06pm by gia

Physics
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as shown in the figure. (a) Construct free-...
Wednesday, October 17, 2012 at 2:07pm by Brette

Physic
The figure below shows a block of mass m resting on a 20 slope. The block has coefficients of friction s = 0.73 and k = 0.53 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.0 kg.
Monday, March 3, 2014 at 7:41pm by Jason

physics
A 4.85-kg block is placed on top of a 12.0-kg block that rests on a frictionless table. The coefficient of static friction between the two blocks is 0.645. What is the maximum horizontal force that can be applied before the 4.85-kg block begins to slip relative to the 12.0-kg ...
Monday, November 7, 2011 at 7:45pm by zach

Physics
Suppose a hanging 1.0 kg lab mass is attached to a 4.0 kg block on the table. a. If the coefficient of kinetic friction, uk is 0.20, what is the acceleration of the block? b. What would be the minimum value of the coefficient of static friction, Us, in order for the block to ...
Friday, January 28, 2011 at 6:07pm by jdajaljk

AP PHYSICS MECH.
In Figure 9-62, block 2 (mass 1.3 kg) is at rest on a frictionless surface and touching the end of an unstretched spring of spring constant 160 N/m. The other end of the spring is fixed to a wall. Block 1 (mass 2.1 kg), traveling at speed v1 = 4.0 m/s, collides with block 2, ...
Monday, February 14, 2011 at 7:28pm by vm

Physics
all correct. One way to think on four is to stop considering "g" as acceleration as in three. In the equation gravitational force= mass*g consider g to be gravitational field strength, in newtons/kg. In Earths case, g at the surface is 9.8N/kg Using this thinking, then if the ...
Sunday, July 18, 2010 at 3:36am by bobpursley

Physics
A light string, connects blocks 1 and 2 of masses m1 and m2. These blocks are further connected to a block of mass M by another light string that passes over a pulley of negligible mass and friction. Blocks 1 and 2 move with a constant velocity v down the inclined plane, which...
Thursday, December 9, 2010 at 10:07pm by Rahul

Physics
Consider two masses m1 and m2 connected by a thin string. Assume the following values: m1 = 4.51 kg and m2 = 1.00 kg. Ignore friction and mass of the string.
Tuesday, January 25, 2011 at 1:26pm by Lauren

Physics.
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block. a) Identify the horizontal force that ...
Tuesday, October 16, 2012 at 3:17pm by Kelsey

physics
A mass m1 = 10 kg on top of a rough horizontal table surface is connected by a massless cable over a frictionless wheel to a hanging mass m2 = 5 kg, as shown in the previous problem. In m2 falls 1 m from rest in 1.2 seconds, find the co-efficient of kinetic friction between m1...
Monday, October 8, 2012 at 1:07pm by kim

Physics
An equilateral triangle 100.0 m on a side has a m1 = 15.00 kg mass at one corner, a m2 = 75.00 kg mass at another corner, and a m3 = 120.00 kg mass at the third corner. Find the magnitude and direction of the net force acting on the 15.00 kg mass.
Thursday, March 17, 2011 at 8:54pm by Bill

PHYSICS
use the formula F=(G(m1)(m2))/r^2 G=universal gravitational constant= 6.67x10^-11 N m^2/kg^2 F=9.8 N (given) m1=1.0 kg (given) m2=mass of earth (variable) r=6.4x10^6 m (given) 9.8 N=((6.67x10^-11 N m^2/kg^2)(1.0 kg)(m2))/(6.4x10^6 m) x=6.02x10^24 kg
Wednesday, December 8, 2010 at 9:58pm by Kaitlin

physics
The mass of the heavier block is 28 kg and the mass of the lighter blocks is 14 kg and the magnitude of the force of the connecting string on the smaller block is 24 N. Assume: g = 9.8 m/s^2 and the horizontal surface on which the objects slide is frictionless. Determine the ...
Friday, September 28, 2012 at 9:19pm by michelle

physics
A block of mass M = 6.755 kg is pulled along a horizontal frictionless surface by a rope of mass m = 0.592 kg, as shown in Fig. 5-63. A horizontal force = 41.5 N is applied to one end of the rope. Assume that the rope only sags a negligible amount. Find (a) the acceleration of...
Sunday, February 26, 2012 at 9:55pm by zach

Physics
Block A of mass 2.0 kg and Block B of 8.0 kg are connected by a spring of spring constant 80 N/m and negligible mass. The system is being pulled to the right across a horizontal frictionless surface by a horizontal force of 4.0 N, with both blocks experiencing equal constant ...
Wednesday, November 14, 2012 at 10:47pm by Alexa

physics
1) a bullet of mass 0.02 kg is fired into a block of wood of mass 1.5 kg resting on a horizontal table. The block moves offwith an initial speed of 8 m/s. Estimate the speed with the bullet strikes the block. 2) The bullet in question 1 is fired from a rifle of mass 2.5 kg. ...
Saturday, March 15, 2014 at 3:40am by waslat

Help me! Physics
A block of aluminum with a mass of 2.6 kg is at 13C and comes in contact with a hot block of copper with a mass of 10.2 kg at 93C. What is the equilibrium temperature in Celsius degrees? caluminum = 0.22 kcal/kgC ccopper = 0.093 kcal/kgC
Thursday, January 17, 2013 at 7:10pm by Sierra

Physics
A block is suspended from the end of a spring. An external force holds the block so that initially the spring is not stretched or compressed. When the block is released, it oscillates up and down between positions A and B. If the mass of the block is 0.5 kg and the spring ...
Monday, February 20, 2012 at 7:21pm by Mary

science
a bullet of mass0.01 kg and travelling with a speed of 500m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The center of gravity of the block is found to raise vertical distance of 0.1m. The speed of bullet after emerging from block is:
Saturday, August 4, 2012 at 1:15am by kapindra

Physics
In the figure below, two blocks are connected over a pulley. The mass of block A is 12 kg, and the coefficient of kinetic friction between A and the incline is 0.22. Angle θ is 30. Block A slides down the incline at constant speed. What is the mass of block B?
Monday, February 21, 2011 at 5:40pm by Ben

physics
A block of wood with a mass of 4.62 kg sits on the edge of a table that is 0.99 m tall. A bullet with a mass of 70.5 g traveling with a speed of 450 m/s is shot into the block and is lodged in it. Assuming that no energy is lost to friction, how far from the table will the ...
Sunday, February 9, 2014 at 7:12pm by dean

Physics-Mechaincs
The suspended 2.29 kg mass on the right is moving up, the 1.3 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down. There is friction between the block and the ramp. u=0.15 The acceleration of gravity is 9.8 m/s2 . The pulleys are massless and...
Friday, September 24, 2010 at 4:57pm by Genevieve

Physics
A block of mass 0.4 kg rests on the inclined surface of a wedge of mass 1.7 kg. The wedge is acted upon by a horizontal force F~ and slides on a frictionless surface. The acceleration of gravity is 9.81 m/s2. If the coefficient of static friction between the wedge and the...
Monday, October 8, 2012 at 6:21pm by Amanda and Leah

physics
Two blocks of mass m1 = 1.2 kg and m2 = 1.7 kg are connected by a massless string, as shown in the Figure. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.45. Calculate the speed of the blocks after they have moved a...
Tuesday, December 11, 2007 at 8:47pm by anonymous

physics
A 2.09 kg block is placed on top of a 10.9 kg block. A horizontal force of F = 63.3 N is applied to the 10.9 kg block, and the 2.09 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.117. There is friction both between the masses...
Sunday, October 10, 2010 at 12:42am by shel

physics
The weightless horizontal bar in the figure below is in equilibrium. Scale B reads 4.00 kg (N.B. as you know, the scale should read N, but no one told the manufacturer). The distances in the figure (which is not to scale) are: D1 = 9.0 cm, D2 = 8.0 cm, and D3 = 6.5 cm. The ...
Tuesday, April 10, 2012 at 8:56pm by James

Physics
m1=2 kg, x1=2m, y1 6 m, v1x =2.4 m/s, v1y =4.1 m/s, m2 = 4.5 kg, x2=4 m, y2 = 1 m, v2x=4.5 m/s, v2y =4.6 m/s. x(c) =(m1x1+m2x2)/(m1+m2) =(22+4.54)/6.5 = 3.38 m, y(c) =(m1y1+m2y2)/(m1+m2) =(26+4.51)/6.5 = 2.54 m. v(cx) =(m1v1x+m2v2x)/(m1+m2) =(22.1+4.54.6)/6.5 = 3....
Tuesday, June 12, 2012 at 12:14pm by Elena

Physics
Block 1 of mass m1 slides from rest along a frictionless ramp from height h and then collides with stationary block 2, which has mass m2 = 3m1. After the collision, block 2 slides into a region where the coefficient of kinetic friction is μk and comes to a stop in ...
Tuesday, November 1, 2011 at 5:38pm by Isabel

Physics
A 6 kg rock is suspended by a massless string from one end of a 6m measuring stick. What is the mass of the measuring stick if it is balanced by a support force at the 1m mark? answer in units of kg. Thanks for any help Rather than just posting the question, you should post ...
Thursday, April 26, 2007 at 9:46pm by Stu

physicsssss
two blocks are connected over a pulley. The mass of block A is 10 kg and the coefficient of kinetic friction between A and the incline is 0.24. Angle of the incline is 30. Block A slides down the incline at constant speed. What is the mass of block B?
Sunday, October 3, 2010 at 4:49pm by ashley

physics
A 3.2 kg block sits on a frictionless table that has a hole cut in the middle of it. The 3.2 kg mass is connected to a string that goes through the hole in the table and attaches to a 4.8 kg mass. The 3.2 kg mass moves in a circle of radius 0.2 m How fast does it have to be ...
Saturday, October 25, 2008 at 2:06pm by mike

Physics
A block of mass 17.9 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.01 m/s2. What is the tension in the cable? What is the magnitude of the net force acting on the mass? What is the speed of the...
Wednesday, February 13, 2013 at 12:42pm by Jessica

physics
A block of mass 3.62 kg lies on a frictionless horizontal surface. The block is connected by a cord passing over a pulley to another block of mass 7.8 kg which hangs in the air, as shown. Assume the cord to be light (massless and weightless) and unstretchable and the pulley to...
Thursday, November 15, 2012 at 4:28pm by alice

Physics
Two blocks are stacked one on top of the other. The coefficient of friction between the two blocks is 0.20, and the coefficient of friction between the bottom block and the floor is 0.10. What is the max force you can apple to the bottom block such that the top block does not ...
Sunday, July 17, 2011 at 10:46pm by Capreeca

physics
A string going over a massless frictionless pulley connects two blocks of masses 4.4 kg and 11 kg. As shown on the picture below, the 4.4 kg block lies on a 23◦ incline; the coefficient of kinetic friction between the block and the incline is μ = 0.29. The 11 kg ...
Thursday, March 6, 2014 at 1:24pm by Sarah

physics
A block with mass = 5.0 rests on a frictionless table and is attached by a horizontal spring ( = 130N ) to a wall. A second block, of mass = 1.35 , rests on top of the block . The coefficient of static friction between the two blocks is 0.40. What is the maximum possible ...
Thursday, January 24, 2013 at 9:05pm by steve

physics
A block with mass = 5.0 rests on a frictionless table and is attached by a horizontal spring ( = 130N ) to a wall. A second block, of mass = 1.35 , rests on top of the block . The coefficient of static friction between the two blocks is 0.40. What is the maximum possible ...
Thursday, January 24, 2013 at 9:06pm by steve

Physic
Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its ...
Monday, March 8, 2010 at 8:47pm by Kelsey

Physics
So the block fell through a height of 1 m in time t, where 1.0=(1/2)gt² or t=√(2/9.81) =0.452 s During this time, the block has travelled horizontally 2m, or horiz. velocity =2/0.452 =4.43 m/s This velocity, v, is the velocity of the block after impact, given by the...
Sunday, November 21, 2010 at 9:06pm by MathMate

Physics
Consider the system of blocks in the figure below, with m2 = 5.0 kg and = 33. If the coefficient of static friction between block #1 and the inclined plane is S = 0.24, what is the largest mass m1 for which the blocks will remain at rest?
Friday, October 19, 2012 at 8:38pm by Lily

physics
A block of ice of mass 4.10 kg is placed against a horizontal spring that has force constant k = 210 N/m and is compressed a distance 2.6010−2 m. The spring is released and accelerates the block along a horizontal surface. You can ignore friction and the mass of the ...
Thursday, October 7, 2010 at 11:37am by ami

physics
A block of mass 4.0 kg is put on top of a block of mass M = 6.0 kg. To cause the top block to slip on the bottom one, while the bottom one is held fixed, a horizontal force of at least 19 N must be applied to the top block. The assembly of blocks is now placed on a horizontal...
Thursday, February 18, 2010 at 8:54pm by tripp

Physics
calculate the acceleration of this system, assuming that there are no frictional forces between the table and Block A. Block A is sitting on a table connected by a rope to a pulley system and Block B is hanging off the table connected to the rope from the pulley system. Mass ...
Tuesday, November 19, 2013 at 10:39pm by JR

cary collage
"A 2.5-kg block slides down a 25 degree inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity reaches 0.65 m/s. The length of the incline is 1.6m. a) What is the acceleration of the block? b) What is the coefficient of ...
Monday, September 27, 2010 at 12:34am by sahan

Physics
In an Atwood machine, one block has a mass of M1 = 520 g and the other has a mass of M2 = 320 g. The frictionless pulley has a radius of 4.6 cm. When released from rest, the heavier block moves down 51 cm in 1.00 s (no slippage). What is the tension T1? Find the pulley's ...
Saturday, November 5, 2011 at 3:23pm by Morgan

Physics
In an Atwood machine, one block has a mass of M1 = 520 g and the other has a mass of M2 = 320 g. The frictionless pulley has a radius of 4.6 cm. When released from rest, the heavier block moves down 51 cm in 1.00 s (no slippage). What is the tension T1? Find the pulley's ...
Saturday, November 5, 2011 at 11:10pm by Spencer

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