Search: A 1.25-kg block is held against a spring of force constant 1.50E+4 N/m, compressing it a distance of 0.181 m. How fast is the block moving after it is released and the spring pushes it away?

Number of results: 48,659

physics
A 1.75-kg wooden block rests on a table over a large hole as in the figure below. A 4.60-g bullet with an initial velocity vi is fired upward into the bottom of the block and remains in the block after the collision. The block and bullet rise to a maximum height of 24.0 cm.
Sunday, March 25, 2012 at 6:02pm by jeezy

high school physics static friction
The system shown below is in equilibrium. Using the fact that block A is placed on a table, has a normal force of 40.2 N and it is not moving, what is the coefficient of static friction on block A? I know you can't answer this but if you have any suggestions: Calculate the...
Wednesday, December 8, 2010 at 9:24pm by Jess

physics
Block A (mass = 3 kg), moving at 10 meters per second, collides with stationary Block B (mass = 5 kg). If the collision is inelastic, what will be the final speed of the connected blocks?
Friday, March 16, 2012 at 4:06pm by nana

Science - Chemistry!!!
A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy of the bullet is ...
Tuesday, October 23, 2012 at 11:07am by Lola

Advanced Chemistry
A lead bullet with a mass of 8.50 g traveling at 4.80 x 102 m/s strikes a 2.00 kg block of wood and is embedded in it. Both the bullet and the block are initially at 25.0°C. Assume that no heat is lost to the surroundings and that all the kinetic energy of the bullet is ...
Tuesday, December 6, 2011 at 9:37pm by mickael

physics
Two blocks are pushed along a horizontal frictionless surface by a force of 20 newtons to the right. The force acts on the 3 kg block, which in turn pushes the 2kg block sitting next to it. The force that the 2-kilogram block exerts on the 3-kilogram block is......
Sunday, January 20, 2008 at 9:27pm by Hannah

physics
An 8 g bullet is shot into a 4.0 kg block, at rest on a frictionless horizontal surface. The bullet remains lodged in the block. The block moves into a spring and compresses it by 7.9 cm. The force constant of the spring is 1400 N/m. What is the impulse of the block (including...
Tuesday, November 6, 2012 at 8:20pm by Zach

Physics
A 0.014 kg bullet is fired straight up at a falling wooden block that has a mass of 4.0 kg. The bullet has a speed of 760 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Monday, October 22, 2012 at 7:51pm by Elizabeth

Physics
A 0.030-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 700 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Sunday, October 24, 2010 at 4:48pm by Xavier

Physics
A spring of k=11 N/m has a block of mass 4 kg attached to it on a frictionless table. If the block is pulled a distance 0.15 m to the right and released from rest, how long will it take the block to return to its equilibrium position?
Monday, April 28, 2008 at 3:08pm by Charlie

Physics
A block of aluminum that has dimensions 2.07 cm by 2.55 cm by 5.00 cm is suspended from a spring scale. The density of aluminum is 2702 kg/m^3. (a) What is the weight of the block? 0.699 N (b) What is the scale reading when the block is submerged in oil with a density of 817 ...
Tuesday, April 10, 2012 at 5:54pm by Maryam

Physics
A block of mass M hangs from a rubber cord. The block is supported so that the cord is not stretched. The unstretched length of the cord is L_0 and its mass is m, much less than M. The "spring constant" for the cord is k. The block is released and stops at the lowest...
Wednesday, December 2, 2009 at 9:32pm by Keith

physics
A block of mass M hangs from a rubber cord. The block is supported so that the cord is not stretched. The unstretched length of the cord is L0 and its mass is m, much less than M. The "spring constant" for the cord is k. The block is released and stops at the lowest ...
Tuesday, December 1, 2009 at 9:29am by Stephen

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 bullet’s ...
Wednesday, March 10, 2010 at 2:27pm by esther

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 bullet’s impact...
Wednesday, March 10, 2010 at 12:58pm by Anonymous

Physics
A 5.0 kg wooden block is placed on an adjustable inclined plane. (For this problem, μs is approximately 0.55 and μk is approximately 0.25) a) What is the angle of incline above which the block will start to slide down the plane? b) At what angle of incline ...
Tuesday, October 11, 2011 at 10:58pm by Yuki

Physics
A 0.012-kg bullet is fired straight up at a falling wooden block that has a mass of 5.0 kg. The bullet has a speed of 670 m/s when it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for a time t when the collision ...
Tuesday, January 11, 2011 at 4:14pm by Tom Atlus

physics
A block of wood of mass 6.0 kg slides along a skating rink at 12.5 m/s^2 [w] . The block slides onto a rough section of ice that exerts a force of 30 N force of friction on the block of wood. The acceleration of the block of wood is 5.0 m/s^2 [E] and it takes 2.5s to stop. How...
Tuesday, March 27, 2012 at 11:20pm by Isabella

physics
How much applied force is needed to accelerate a 2.0 kg block of wood at 4.0m/s^2 along a rough table, against a 10 N force of friction?
Sunday, March 25, 2012 at 1:18pm by Melissa

Physics
A block is being pulled up a ramp. Assume that the frictional force acting on the block on the ramp is 25.0N. What is the x-component of the force of gravity on the block on the ramp? What is the acceleration of the block?
Tuesday, January 10, 2012 at 9:18pm by Pepesina

Physics
A 50-kg block is at rest on a 15 degree slope. A force of 250 N is acting on the block up the slope parallel to it. If the block does not slide up the slope, what is the minimum value of the coefficient of static friction between the block and the slope?
Monday, November 22, 2010 at 7:54pm by Brooke

physics
A copper block with a mass 1.82 kg is given an initial speed of 3.5 m/s on a rough horizontal surface. Because of friction, the block finally comes to rest. Assume that 77.4 % of the initial kinetic energy is absorbed by the block in form of heat, what is the change in ...
Thursday, February 9, 2012 at 5:23pm by Sam

physic12-dymanics
A 5kg block slides down an incline of 25 degrees to the horizontal at a constant speed. a) what is the net force on the block? b) what is the magnitude of the friction force acting on the block? c) If friction was negligible and the block was accelerating down , what would be ...
Tuesday, March 23, 2010 at 11:19pm by sk

physics (lVERY LONG)
A force of 200 N is being exerted on a blocki, which has a mass of 10 kg and is on 30 degrees inclined plane. The force is acting up the plane and parallel to it. The coefficient of friction between the block and the plane is .3 and the plane is 12 m long. a. What is the ...
Monday, November 22, 2010 at 7:18pm by rhet butler

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
a 1 kg dart moving horizntally at 10 m/s sticks to a wood block of mass 9 kg which slides across a friction free level surface. what is the speed of the block and dart after collision?
Monday, November 22, 2010 at 7:52pm by lisa

Physics
A block is pulled 2.9 meters up a 30° rough incline by an applied force Fa = 170 N, directed up the ramp. The frictional force has a magnitude of 90 N. The block starts from rest and has a final kinetic energy of 16 J. Find the following: a) The total work done on the ...
Thursday, February 18, 2010 at 10:34pm by Dar

Physics
A 3.66 kg block is placed on an inclined surface that makes an angle of 18.5° relative to horizontal. The coefficients of static and kinetic friction between the block and surface are 0.534 and 0.239, respectively. The block remains at rest when released. What is the ...
Thursday, May 10, 2012 at 11:20pm by Anonymous

physics
A 3.00-kg block starts from rest at the top of a 27.5° incline and slides 2.00 m down the incline in 1.20 s. (a) Find the acceleration of the block. m/s2 (b) Find the coefficient of kinetic friction between the block and the incline. (c) Find the frictional force acting on...
Tuesday, October 2, 2012 at 6:04pm by monic

Physics
A 3.00-kg block starts from rest at the top of a 33.5° incline and slides 2.00 m down the incline in 1.30 s. (a) Find the acceleration of the block. m/s2 (b) Find the coefficient of kinetic friction between the block and the incline. (c) Find the frictional force acting on...
Thursday, March 8, 2012 at 6:57pm by Cindy

Physics
A lower block is being pulled to the right across a wooden table and it is 5kg and the block on top of it weighs 2 Kg. The friction between the table and the lower block is reduces the total acceleration to be 1.5 m/s2. Friction keeps the upper block attached to the lower one...
Monday, February 21, 2011 at 3:46pm by Paige

Physics
A block of mass of 24.0 kg is sitting on a frictionless surface. If the block is initially at rest, and a force of 3.0 N parallel to the surface is applied for 5.0 seconds, what is the final speed of the block?.
Tuesday, December 6, 2011 at 5:10pm by Victoria

physics
A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of the system and the ...
Saturday, January 12, 2013 at 12:52pm by Samuel

physics
A 3.00 kg block starts from rest at the top of a 36.0'> incline and slides 2.00 m down the incline in 1.60 s. (a) Find the acceleration of the block. m/s2 (b) Find the coefficient of kinetic friction between the block and the incline. (c) Find the frictional force ...
Sunday, February 27, 2011 at 6:05pm by Anonymous

physics
A solid block of mass m2 = 8.3 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring. The other end of the spring is fixed, and the spring constant is k = 210 N/m. Another solid block of mass m1 = 12.4 kg and speed v1 = 4.9 m/s collides with the 8....
Sunday, April 14, 2013 at 3:23pm by Nicole

physics
A block of mass m1 = 3.2 kg rests on a frictionless horizontal surface. A second block of mass m2 = 1.9 kg hangs from an ideal cord of negligible mass that runs over an ideal pulley and then is connected to the first block. The blocks are released from rest a) Find the ...
Tuesday, February 12, 2013 at 12:07pm by tsubasa

Physics
A bullet of mass 1.9×10−3 kg embeds itself in a wooden block with mass 0.987 kg, which then compresses a spring (k = 120 N/m) by a distance 3.5×10−2 m before coming to rest. The coefficient of kinetic friction ...
Friday, October 8, 2010 at 6:39pm by Bartholomew

physics
A 2.00 kg frictionless block is attached to a horizontal spring as shown. At t = 0, the position x = 0.225 m, and the velocity is 4.25 m/s toward the right in the positive x direction. Position x as a function of t is: x = A*cos(ωt ) , where A is the amplitude of ...
Tuesday, December 4, 2012 at 2:04am by toby

physics
A 1.5-kg block rests on top of a 7.5kg block. The cord and pulley have negligible mass, and there is no significant friction anywhere. Part a) What force F must be applied to the bottom block so the top block accelerates to the right at 2.9 m/s^2 ? Part b) What is the tension ...
Monday, May 7, 2012 at 10:42pm by ericka

Physics help please!!!
A 2.10 kg frictionless block is attached to an ideal spring with force constant 315N/m . Initially the block has velocity -3.75m/s and displacement 0.270m . Find (a) the amplitude of the motion. (b) the maximum acceleration of the block. (c) the maximum force the spring exerts...
Tuesday, March 27, 2012 at 1:29pm by john

Physics
Block 1 is up an incline and is attacthed to block 2 by a rope, with m2 = 5.0 kg and è = 33°.If the coefficient of static friction between block #1 and the inclined plane is ìS = 0.24, what is the largest mass m1 for which the blocks will remain at rest?
Saturday, October 20, 2012 at 2:56pm by Anne

Dynamics
The 10 kg block shown is released from rest on the horizontal surface at point B, where the spring has been stretched a distance of 0.5 m from its neutral position A. The coefficient of kinetic friction between the block and the plane is 0.30. Calculate (a) the velocity v of ...
Sunday, March 24, 2013 at 11:44pm by Brandon

physics
A 2 kg block situated on a rough incline surface (θ= 37o) and is connected to a spring with k = 100 N/m. The block initially at rest. The block moves 20 cm down the incline before stops. Find the coefficient of friction between the block and the surface. (Can you give...
Thursday, September 6, 2012 at 11:16am by charley

physics
A 2.7 kg block, starting from rest, slides down a ramp with friction. The top of the ramp is 1.5 m above the ground; the bottom of the ramp is h = 0.25 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance d away. Find the distance ...
Monday, May 31, 2010 at 9:43am by amy

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 9.7×10−2 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...
Tuesday, August 3, 2010 at 11:26pm by Todd

Physics
A block with a mass 4.0 kg is held in equilibrium on an incline of angle θ = 42° by a horizontal force F. a)Find the magnitude of the normal force. b) Find the magnitude of F. (Ignore friction.)
Tuesday, October 19, 2010 at 1:03am by Diana

Physics
A block of mass m1 = 22.0 kg is connected to a block of mass m2 = 40.0 kg by a massless string that passes over a light, frictionless pulley. The 40.0-kg block is connected to a spring that has negligible mass and a force constant of k = 260 N/m as shown in the figure below. ...
Tuesday, March 12, 2013 at 1:53am by Anonymous

3rd grade
Is a nickel 6 grams or 6 kilograms? A watch 25 g or 25 kg? a dog 22 g or 22 kg? A backpack 4 g or 4 kg? A pencil 6 g or 6 kg? radio 2 g or 2 kg?
Tuesday, February 24, 2009 at 6:01pm by bryce

Physics
A 5 kg block is being pulled to the right with a 20 N force. This causes the block to slide along the table with an acceleration of 2 m/s2. What is the coefficient of kinetic friction between the block and table?
Monday, February 21, 2011 at 3:43pm by Paige

Physics
A 10 kg block is pushed across a rough surface by a 25N force the block moves at a constant velocity when this force is applied. A) determine the magnitude of the friction force acting on the block B) What is the coefficient of friction between the surface and the block
Monday, July 18, 2011 at 12:51am by Edward

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 ...
Saturday, January 14, 2012 at 4:35pm by frank

PHYSICS HELP PLEASE!!!
A block of mass 2.62 kg is kept at rest as it compresses a horizontal massless spring(k = 141 N=m) by 15.3 cm. As the block is released, it travels 0.627 m on a rough hori- zontal surface before stopping. The acceleration of gravity is 9.8 m/s2 :Calculate the coe±cient ...
Sunday, March 4, 2007 at 12:42am by kitt

physics
A 150 N block is at rest on a table, a cable is connected from this block to another hanging off of the table. This block is 75 N. What is the magnitude of the minimum force of static friction on the 150 N block required to hold both blocks at rest? What would the coefficient ...
Thursday, August 9, 2012 at 10:47am by kacey

Physics
A 1.1 kg block slides along a friction-less surface at 1.4 m/s. A second block, sliding at a faster 4.3 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.6 m/s. What was the mass of the second block?
Monday, November 26, 2012 at 2:28pm by K

Physics
A 2.9 kg block slides along a frictionless surface at 1.3 m/s. A second block, sliding at a faster 5.0 m/s, collides with the first from behind and sticks to it. The final velocity of the combined blocks is 2.7 m/s. What was the mass of the second block?
Sunday, October 17, 2010 at 9:26pm by mike

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
The following objects are released from rest and allowed to roll down an inclined plane. Rank the objects by the order of which they will arrive at the bottom of the incline. (1 = the first to arrive, 2 = the second, etc.) I = 2611 kg*m^2, M = 50 kg, R = 0.8 m I = 2883 kg*m^2...
Friday, March 16, 2012 at 10:31pm by Katie

physics
Question Part Points Submissions Used 1 2 –/1 –/2 0/3 0/3 Total –/3 A force of 12.8 N pulls horizontally on a 0.9 kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 2.04 kg on the ...
Tuesday, October 9, 2012 at 10:53pm by Anonymous

Physics-Linear momentum
A block of mass m = 2.60 kg slides down a 30.0° incline which is 3.60 m high. At the bottom, it strikes a block of mass M = 6.80 kg which is at rest on a horizontal surface, Fig. 7-46. (Assume a smooth transition at the bottom of the incline, an elastic collision, and ...
Sunday, November 21, 2010 at 11:06pm by Joe

Physics
Two blocks sit on a horizontal surface. They are connected to each other by a massless cord. The block on the left has a mass of 4.8 kg and the block on the right has a mass of 2.2 kg. Another massless cord is attached to the block on the right and pulls that block with a ...
Monday, February 18, 2013 at 11:55pm by Patrick

math
Two blocks sit on a horizontal surface. They are connected to each other by a massless cord. The block on the left has a mass of 5.1 kg and the block on the right has a mass of 3.0 kg. Another massless cord is attached to the block on the right and pulls that block with a ...
Sunday, September 23, 2012 at 1:52pm by kara

physics
In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the connecting cord taut, what is their ...
Sunday, March 22, 2009 at 12:05am by sweety

physics
A 3.00 kg block starts from rest at the top of a 30° incline and accelerates uniformly down the incline, moving 1.94 m in 1.70 s. (a) Find the magnitude of the acceleration of the block. (b) Find the coefficient of kinetic friction between the block and the incline. (c) ...
Thursday, March 10, 2011 at 12:28am by justin

physics
The horizontal surface on which the block of mass 4 kg slides is frictionless. The force of 30N acts on the block in a horizontal direction and the force of 60N acts on the block at an angle. What is the magnitude of the resulting acceleration of the block? The acceleration of...
Tuesday, July 12, 2011 at 1:17am by alexa

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
Two blocks move along a linear path on a nearly frictionless air track. One block, of mass 0.120 kg, initially moves to the right at a speed of 4.90 m/s, while the second block, of mass 0.240 kg, is initially to the left of the first block and moving to the right at 7.40 m/s. ...
Thursday, October 18, 2012 at 6:21pm by Pat

physics
The mass of the block is 1.8 107 kg, the dip angle è of the bedding plane is 26°, and the coeffient of static friction between block and plane is 0.63. (a) Show that the block will not slide. (b) Water seeps into the joint and expands upon freezing, exerting on the ...
Thursday, December 11, 2008 at 9:54pm by johnny

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 physics student pulls a block of mass m = 23 kg up an incline at a slow constant velocity for a distance of d = 4 m. The incline makes an angle q = 25° with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is µk = 0.3. a...
Sunday, March 11, 2012 at 10:46pm by Mel

physics
The horizontal surface on which the block of mass 5.1 kg slides is frictionless. The force of 62 N acts on the block in a horizontal direction and the force of 124 N acts on the block at an angle of 60 degrees. What is the magnitude of the resulting acceleration of the block? ...
Saturday, October 1, 2011 at 8:29am by Kylie

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 5.0 kg block of some unknown material is suspended from a spring scale and submerged in water.? The spring scale reads 39.3 N. What is the specific gravity of the block? I get 5051.5 kg/m^3 but its incorrect.
Wednesday, June 27, 2012 at 9:23pm by Joseph

physics
When a 2.50-kg object is hung vertically on a certain light spring described by Hooke's law, the spring stretches 3.13 cm. a)What is the force constant of the spring? b) If the 2.50-kg object is removed, how far will the spring stretch if a 1.25-kg block is hung on it?
Wednesday, October 5, 2011 at 7:48pm by Anonymous

Physics ASAP
A block of weight 20 N is pushed with a force of 30 N through a horizontal distance of 5 m using a stick which is at an angle of 37° from the horizontal as shown. The coefficient of kinetic friction µk between the table and the block is 0.25. For your own reference, ...
Monday, December 10, 2012 at 11:03am by Sierra

physics
Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?
Sunday, September 23, 2012 at 3:09am by Becky

Physics
Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 is 3.4 kg and m2 is 9.1 kg, and block 2 is initially at rest 130 cm above the floor, how long does it take block 2 to reach the floor?
Wednesday, September 23, 2009 at 11:27pm by Megan

Physics
A moving 4.80 kg block collides with a horizontal spring whose spring constant is 243 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.390. What is ...
Wednesday, March 5, 2008 at 7:54am by Courtney

physics
A moving 1.60 kg block collides with a horizontal spring whose spring constant is 295 N/m. The block compresses the spring a maximum distance of 3.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.500. What is ...
Thursday, February 28, 2008 at 9:58pm by rory

PHYSICS PLEASE HELP!!!
Please someone have mercy this is a test grade and I have no idea what to do ! A force of 200 N is being exerted on a blocki, which has a mass of 10 kg and is on 30 degrees inclined plane. The force is acting up the plane and parallel to it. The coefficient of friction between...
Monday, November 22, 2010 at 7:53pm by Tyler

physics
1. A 3.25 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.195 s, what is the average force exerted on the ball by the wall? x component...
Sunday, July 6, 2008 at 11:01pm by Elisa

Physics
A 20.0 kg crate is pushed across a rough floor for a distance of 90.0 cm. When the force pushing the block is equal to 80.0 N and applied at an angle of 18.0 below horizontal to the block, the block moves at a constant speed of 2.10 m/s.
Friday, October 15, 2010 at 1:33pm by Diana

physics
A 5 g bullet is fired into a 2 kg wooden block attached to a spring with a force constant of 20 N/m. It lodges in the block, and the block and bullet compress the spring until they come to a rest. If the bullet was moving at 1000 m/s just before the collision, how far is the ...
Wednesday, July 18, 2012 at 2:36am by shawn

Physics
A 235-g block is pressed against a spring of force constant 1.55 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal. Using energy considerations, determine how far up the incline the block moves ...
Tuesday, November 8, 2011 at 11:00pm by marvin

Physics
A block of mass 3 kg is at rest on an incline. The coefficient of state friction between the block and incline is 0.34. What is the maximum angle of the incline such that the block will not slide down the plane?
Sunday, February 17, 2013 at 4:35pm by Amy

Physics
A 2.95 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0330 m. The spring has force constant 900 N/m. The coefficient of kinetic friction between the floor and the block is 0.42 . The block and spring are released from rest and ...
Tuesday, March 13, 2012 at 2:03am by Kelsey

Physics/Math
A 17 N horizontal force F pushes a block weighing 6.0 N against a vertical wall. The coefficient of static friction between the wall and the block is 0.68, and the coefficient of kinetic friction is 0.48. Assume that the block is not moving initially. Will the block move? In ...
Saturday, February 10, 2007 at 5:57pm by COFFEE

physics
There is a block on top of an incline plane. The incline is going down to the right. The angle to the right of the 90 is 36.9 degree. There is a force pushing on it from the left. Find the applied force (F) needed to prevent the block from sliding down the incline; ignore ...
Sunday, June 26, 2011 at 11:18am by k9

physics imperfect spring
The force required to compress an imperfect horizontal spring an amount x is given by F= 150x+12x^3, where x is in meters and F in newtons. If the spring is compressed 2.1 m, what speed will it give to a 4.0 kg ball held against it and then released?
Thursday, May 21, 2009 at 9:31pm by annie

Physics/Math
A 3.0 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 18 N at an angle = 45° with the horizontal. The coefficient of kinetic friction between the block and floor is 0.25. (Assume the positive direction is to the right.) Calculate...
Saturday, February 10, 2007 at 5:56pm by COFFEE

Science
A block of ice of mass M is pulled horizontally with a steady force P against a force of friction F I have to write an equation for the acceleration of the block.
Wednesday, February 9, 2011 at 6:19pm by Tyler

physicss help!
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with the spring unextended...
Wednesday, November 2, 2011 at 5:58pm by joe

physics
m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with the spring unextended...
Wednesday, November 2, 2011 at 5:28pm by joe

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