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April 19, 2014

Search: A 7.0-kg block on a horizontal frictionless surface is attached to a light spring (force constant = 1.2 kN/m). The block is initially at rest at its equilibrium position when a force

Number of results: 39,515

Physics
The sketch shows a mobile in equilibrium. Each of the rods is 0.16 m long, and each hangs from a supporting string that is attached one fourth of the way across it. The mass of each rod is 0.10 kg. The mass of the strings connecting the blocks to the rods is negligible. What ...
Sunday, June 10, 2012 at 7:14pm by Kate

Physics
Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10.0 cm that has a coefficient of ...
Tuesday, March 30, 2010 at 5:07pm by Kelly

Physics
Two blocks, each with a mass = 0.168 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed = 1.28 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on block 1 is compressed. Maximum compression of the ...
Monday, March 5, 2012 at 12:40am by Lilly

physics
Two blocks, each with a mass m = 0.400 kg, can slide without friction on a horizontal surface. Initially, block 1 is in motion with a speed $v$ = 1.20 m/s; block 2 is at rest. When block 1 collides with block 2, a spring bumper on block 1 is compressed. Maximum compression of ...
Wednesday, March 5, 2014 at 6:07pm by Ted

Physics
A 5.1kg block is pulled along a frictionless floor by a cord that exerts a force P = 12 N at an angle θ = 25 above the horizontal, as shown below. (a) What is the acceleration of the block? (b) The force P is slowly increased. What is the value of P just before the ...
Sunday, February 23, 2014 at 2:39am by Chrxeyshthoufov

PHYICAL
\ A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.
Sunday, July 8, 2012 at 8:25am by bbbb

PHYICAL
A 100 N block is on rough horizontal surface. If a horizontal force F=40 N is applied and the block just start slide. What is the value of the static coefficient.
Sunday, July 8, 2012 at 3:27pm by a AL

PHYSICS*****
A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 59.4 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring compressed by 2.21 cm ...
Wednesday, March 21, 2012 at 9:10pm by Steve

physics
A block is pulled to the right across a alevel surface at a constant velocity of a horizontal force of 16 newtons. what is the coefficient of kinetic friction between the block and the surface?
Thursday, May 24, 2012 at 1:29pm by Jen

physics - charge
A 80.0 g block carrying a charge Q = 33.0 C is connected to a spring for which k = 74.0 N/m. The block lies on a frictionless, horizontal surface and is immersed in a uniform electric field of magnitude E = 4.84 104 N/C directed away from the spring and block. The block is ...
Saturday, July 10, 2010 at 11:44pm by lo

physics
A 3.39 kg block is placed on top of a 11.8 kg block. A horizontal force of F = 61.3 N is applied to the 11.8 kg block, and the 3.39 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.112. There is friction both between the ...
Thursday, October 4, 2012 at 9:50pm by Anonymous

physics
A 3.39 kg block is placed on top of a 11.8 kg block. A horizontal force of F = 61.3 N is applied to the 11.8 kg block, and the 3.39 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.112. There is friction both between the ...
Thursday, October 4, 2012 at 9:53pm by Anonymous

physics
A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st block and the surface ...
Monday, October 29, 2007 at 4:46pm by Sam

Physics
A 3.3 kg wooden block is placed on 22 degree inclined plane and is connected by a string that passes over a light friciton less pulley at the top of the incline and then attached to a hanging 3.0kg block.If the coefficient of static friction bet the 1st block and the surface ...
Tuesday, October 30, 2007 at 5:07pm by ricky

physics please help :/
A 0.50-kg block, starting at rest, slides down a 30.0 incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a) What is the maximum ...
Thursday, March 1, 2012 at 5:11pm by Angel

Physics
Three objects with masses m1 = 7.4 kg, m2 = 11 kg, and m3 = 18 kg, respectively, are attached by strings over frictionless pulleys (M1 hangs off the left side of the table and M3 hangs off the right side of the table with M2 between them on the table). The horizontal surface ...
Monday, October 22, 2012 at 5:33pm by Dug

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 is 26 . If the blocks are released from rest with the connecting cord taut, what is their total kinetic ...
Saturday, March 21, 2009 at 7:41pm by sweety

Physics
Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10.0 cm that has a coefficient of ...
Wednesday, March 31, 2010 at 2:06pm by Holy Grail

physics- please !
A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42. PART A: What is the ...
Tuesday, May 8, 2012 at 11:01pm by jeni

physics- please !
A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42. PART A: What is the ...
Tuesday, May 8, 2012 at 11:24pm by jeni

Physic
A 3.5 kg block is pushed along a horizontal floor by a force of magnitude 15 N at an angle = 40 with the horizontal. The coefficient of kinetic friction between the block and the floor is 0.25. Calculate the magnitudes of (a) the frictional force on the block from the floor...
Wednesday, September 28, 2011 at 9:25pm by Don

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 of ice at 0C whose mass initially is m = 12.5 kg slides along a horizontal surface, starting at a speed vo = 4.10 m/s and finally coming to rest after traveling a distance d = 10.07 m. Compute the mass of ice melted as a result of the friction between the block and ...
Tuesday, December 8, 2009 at 8:38pm by AK

Physics
A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.
Monday, February 7, 2011 at 8:19pm by Megan

Physics
A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.
Monday, February 7, 2011 at 8:19pm by Megan

Physics
A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.
Monday, February 7, 2011 at 8:21pm by Megan

Physics
A 0.495-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface. The spring is stretched 33.3 cm from equilibrium, and then the mass is released from rest. Find the speed of the mass when it has moved 4.79 cm? Find the maximum...
Wednesday, February 22, 2012 at 3:28pm by Bradley

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

physics
A 10.0 kg block is released from point A in the figure below. The track is frictionless except for the portion between points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2350 N/m, and compresses the spring to 0.250 m...
Sunday, March 1, 2009 at 10:26pm by mightymouse

physics
A 10.0 kg block is released from point A in the figure below. The track is frictionless except for the portion between points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2300 N/m, and compresses the spring to 0.200 m...
Monday, November 14, 2011 at 2:48pm by carlton

Physics
A 6.40 kg block rests on a 12.5 kg block as shown in the diagram. The interface between the lower mass and the table is frictionless, but there is friction (static friction μS and kinetic friction μK) between the two blocks. A horizontal force F r acts on the UPPER ...
Sunday, February 24, 2013 at 12:12pm by Meder

physics
(hrwc5p72) A mass m2 = 2.4 kg, on a 37.4 incline, is connected to a mass m1 = 6.9 kg, on a horizontal surface. The surfaces and the pulley are frictionless. If F = 18.9 N, what is the magnitude of the tension in the connecting cord?
Monday, February 28, 2011 at 10:31pm by Lyndsey

physics
a force of 20n applied parallel to the surface of a horizontal table is just sufficient to make a block of mass 4.kg move on the table caculate thd coefficient of friction between the block and the table
Wednesday, October 26, 2011 at 2:43pm by fawaz

physics
a force of 20n applied parallel to the surface of a horizontal table is just sufficient to make a block of mass 4.kg move on the table caculate thd coefficient of friction between the block and the table
Wednesday, October 26, 2011 at 2:43pm by fawaz

pHYSICS HElp
***EXTRA CREDIT*** Figure 8-33 shows a 1.50 kg block at rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 10.0 cm that has a ...
Wednesday, March 31, 2010 at 9:10pm by Kelly

physics
The coefficient of static friction between a block and a horizontal floor is 0.35, while the coefficient of kinetic friction is 0.12. The mass of the block is 4.5 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of the applied ...
Thursday, February 16, 2012 at 10:23pm by Julie

physics
The coefficient of static friction between a block and a horizontal floor is 0.40, while the coefficient of kinetic friction is 0.15. The mass of the block is 5.0 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of the applied ...
Thursday, March 15, 2012 at 12:58am by nuwan

physics
The coefficient of static friction between a block and a horizontal floor is 0.40, while the coefficient of kinetic friction is 0.15. The mass of the block is 5.0 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of the applied ...
Thursday, March 15, 2012 at 12:59am by tharidu

physics
The coefficient of static friction between a block and a horizontal floor is 0.40, while the coefficient of kinetic friction is 0.15. The mass of the block is 5.0 kg. A horizontal force is applied to the block and slowly increased. (a) What is the value of the applied ...
Thursday, March 15, 2012 at 1:02am by tharidu

physics
The coefficient of static friction between a block and a horizontal floor is 0.414, while the coefficient of kinetic friction is 0.107. The mass of the block is 4.03 kg. A horizontal force is applied to the block and slowly increased. What is the value of the applied ...
Sunday, September 23, 2012 at 12:02pm by Liz

Physics
A 26 bullet strikes and becomes embedded in a 1.35 block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.23, and the impact drives the block a distance of 9.9 before it comes to rest...
Sunday, October 17, 2010 at 4:18pm by Brittanie

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

Physics
a 2 kg block slides down a frictionless incline from point A to point B. A force(magnitude P=3N) acts on the block between A and B, as shown. Points A and B are 2 m apart. If the kinetic energy of the block at A is 10 J, and the work done by gravity is 20J, what is the KE of ...
Thursday, March 24, 2011 at 12:44am by Robert

physics
Two boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figures below, where m1 = 10 kg and m2 = 19 kg. A force of 46 N is applied to the 19 kg box. (a1) Determine the acceleration of the boxes
Thursday, October 4, 2012 at 11:49pm by Anonymous

physics
A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42. Part a: What is the ...
Tuesday, May 8, 2012 at 9:31pm by kle

Physics 4
A 10.0-kg block is released from point A in Figure P8.57. The track is frictionless except for the portion between points B and C , which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2 250 N/m, and compresses the spring 0.300 m from...
Thursday, October 20, 2011 at 9:03pm by Anonymous

physics
A 10.0 kg block is released from point A in the figure below. The track is frictionless except for the portion between points B and C, which has a length of 6.00 m. The block travels down the track, hits a spring of force constant 2350 N/m, and compresses the spring to 0.250 m...
Sunday, November 18, 2012 at 10:15pm by Emily Tran

physics
A mass of 0.04 kg is attached to a cord passing through a small hole in a frictionless, horizontal surface. The mass is initially orbiting with speed 4.9 m/s in a circle of radius 0.4 m. The cord is then slowly pulled from below, decreasing the radius of the circle to r2 = 0....
Wednesday, October 19, 2011 at 5:57pm by will

physics
Two blocks of mass m1 = 1.0 kg and m2 = 2.5 kg are connected by a massless string. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.40. Calculate the speed of the blocks after they have moved a distance 72 cm. Assume ...
Saturday, December 4, 2010 at 8:20pm by lucy

physics
Each of 108 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first block is pulled with a force of 108N. Part A. What is the tension in the string connecting block 108 to block 107? Part B. What is the tension in the ...
Sunday, October 9, 2011 at 6:04pm by Josh

physics
A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 12.0 N force directed 25.0 below the horizontal. (a) Determine the work done by the applied force. J (b) Determine the work done by the normal force exerted by the table. J (c) ...
Wednesday, October 10, 2012 at 11:24pm by monic

physics
A block of mass 2.50 kg is pushed 2.80 m along a frictionless horizontal table by a constant 12.0 N force directed 25.0 below the horizontal. (a) Determine the work done by the applied force. J (b) Determine the work done by the normal force exerted by the table. J (c) ...
Friday, October 12, 2012 at 12:10am by monic

phyzzzics
I NEED ANSWERS AND HOW YOU GOT IT~!! 3. If you use a horizontal force of 30.0 N to slide a 12.0-kg wooden crate across a floor at a constant velocity, what is the coefficient of kinetic friction between the crate and the floor? 4. A force of 4.0N is large enough to overcome ...
Sunday, December 6, 2009 at 2:37pm by johnica!

physics
An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is μ1 . At the bottom of the incline, the block slides along ...
Tuesday, October 15, 2013 at 9:07am by Anonymous

physics
An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is μ1 . At the bottom of the incline, the block slides along ...
Tuesday, October 15, 2013 at 11:22am by Anonymous

Physics
The drawing shows a large cube (mass = 27 kg) being accelerated across a horizontal frictionless surface by a horizontal force vector P . A small cube (mass = 4.0 kg) is in contact with the front surface of the large cube and will slide downward unless vector P is ...
Monday, September 20, 2010 at 7:50pm by Sarah

Physics
a)An object on a frictionless surface forms an angle of 27 with the horizontal. The object is pushed by a horizontal external force such that it moves with a constant speed. If the mass of the object is 72.3 kg, calculate the magnitude of the external force. b)What is the ...
Saturday, October 25, 2008 at 2:15pm by Anonymous

Physics
Two blocks (M1 = 2.57 kg and M2 = 6.71 kg) are in contact on a frictionless, horizontal tabletop. An external force, $\vec{F}$, is applied to block 1, and the two blocks are moving with a constant acceleration of 2.59 m/s2. What is the contact force between the blocks? What is...
Sunday, September 22, 2013 at 1:06pm by Lyra

physics
a 2kg block is placed on a frictionless wedge that is inclined at an angle of 60 degrees from the horizontal. if you release the block, it would slide down the wedge. it turns out that if you push the wedge to the right with acceleration a, the block will actually remain ...
Sunday, September 11, 2011 at 11:52am by Anonymous

Physics
A block has mass 800 g, whose is fasten to a spring with spring constant k is 70 N/m. The block is pulled a distance x = 15 cm from its equilibrium position at x = 0 on a frictionless surface and released from rest at t = 0. (a) What force does the spring exert on the block ...
Sunday, December 18, 2011 at 8:38am by Dia

physics please help!!
A moving 2.20kg block collides with a horizontal spring whose spring constant is 419 N/m. The block compresses the spring a maximum distance of 9.00cm from its rest postion. The coefficient of kinetic friction between the block and the horizontal surface is 0.140. a) What is ...
Thursday, October 6, 2011 at 8:55pm by archi

Physics
A block of mass m1 = 4.80 kg sits on top of a second block of mass m2 = 15.6 kg, which in turn is on a horizontal table. The coefficients of friction between the two blocks are s = 0.300 and k = 0.100. The coefficients of friction between the lower block and the rough table ...
Saturday, October 31, 2009 at 2:02pm by Annie

Physics
Ok I got a question I asked before except there are other parts that I didn't ask so here we go Three blocks on a frictionless horizontal surface are in contact with each other A force F is applied to block 1 (mass m1). Draw a free-body diagram for each block ok I did this the...
Sunday, July 12, 2009 at 12:06pm by Physics

physics
As shown in the figure below, a 2.25-kg block is released from rest on a ramp of height h. When the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.0 cm that ...
Friday, November 30, 2012 at 2:24pm by Diego

physics
a block of mass m=0.9 kg is connected to a spring of force constant k= 775 N/m on a smooth horizontal surface. plot the potential energy of the spring from x= -5 cm to x= 5 cm. determine the turning points of the block if its speed at x= 0 is 1.2 m/s.
Sunday, October 7, 2012 at 11:23am by Mima

physics (newton's laws)
A 5.00 kg object placed on a frictionless, horizontal table is connected to a string that passes over a pulley and then is fasted to a hanging 9.00 kg object. Find the acceleration of the two objects and the tension in the string. First, there is just one force acting on the ...
Tuesday, February 20, 2007 at 1:05am by Eric (please help me)

Physics
A mass m1 on a horizontal shelf is attached by a thin string that passes over a frictionless pulley to a 2.5 kg mass (m2) that hangs over the side of the shelf 1.2 m above the ground. The system is released from rest at t = 0 and the 2.5 kg mass strikes the ground at t = 0.82 ...
Sunday, February 26, 2012 at 8:30pm by J

physics
A 1.4-kg block slides across a rough surface such that it slows down with an accerleration of 1.2 m/s2. What is the coefficient of kinetic friction between the block and the surface?
Tuesday, January 10, 2012 at 2:16pm by amirah

physics
A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. How many times ...
Sunday, December 2, 2012 at 3:20pm by Emily

Physics
A m1 = 4.20-kg block on a smooth tabletop is attached by a string to a hanging block of mass m2 = 2.60 kg, as shown in the figure. The blocks are released from rest and allowed to move freely.
Tuesday, October 5, 2010 at 9:13pm by Manuel

physics
Pleaseee help explain how to draw the free body diagrams for this problem!!! Two blocks with masses m1 = 10.9 kg and m2 = 79.3 kg, shown in the figure (in the figure the 79.3kg block(m2) is on a flat surface, the 10.9kg(m1) block is pinned against the block with the greater ...
Wednesday, November 9, 2011 at 8:32am by dave

mechanics
Q2. A block of massmrests on the left edge of a block of larger massM. The coefficient of kinetic friction between the two blocks is , and the surface on which the larger block rests is frictionless. A constant horizontal force of magnitude F is applied to the block of mass m...
Thursday, December 9, 2010 at 3:45am by sana

Physics
A 0.51-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface. The spring is stretched 26 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
Saturday, June 2, 2012 at 12:07am by Vladimir

Physics
A 0.53-kg mass is attached to a horizontal spring with k = 106 N/m. The mass slides across a frictionless surface. The spring is stretched 27 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
Saturday, June 2, 2012 at 8:13pm by Jimmy

physics
a 1.4 kg block slides across a rough surface such that it slows down with an acceleration of 1.25 m/s2. What is the coefficient of kinetic frisction between the block and the surface?
Sunday, December 9, 2007 at 8:38pm by ellimac

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

Engineering
A 10.0 Kg block is released from point A in the figure below. The block travels along a smooth frictionless track. It makes a collision with stationary 10 kg ball. The ball moves forward with speed of 2 m/s. a) What is the speed of the block at point C? b) What is the velocity...
Friday, June 7, 2013 at 1:39pm by Ahmed

physics
A 34.2 -kg block rests on the oor. (a) What force (N) does the oor exert on the block? (b) If a rope is tied to the block and run vertically over a pulley, and the other end is attached to a free-hanging 5.6 kg weight, what force (N) does the oor now exert on the block? (c) If...
Saturday, August 6, 2011 at 9:13am by waqas

Physics
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a frictionless and massless pulley. The other end of the pulley is attatched to block B which has a mass of 10 kg. Block B rests on an incline which has an ...
Monday, February 20, 2012 at 9:36pm by Eastern Illinois University

Physics
Two blocks are positioned as shown below. block A has a mass of 15 kg and hangs on one end of a cable that passes over a frictionless and massless pulley. The other end of the pulley is attatched to block B which has a mass of 10 kg. Block B rests on an incline which has an ...
Monday, February 20, 2012 at 9:38pm by Eastern Illinois University

Physics
A 50g bullet strikes a stationary 1.50kg block of wood paced on a horizontal surface just in front of the gun. The bullet becomes embedded in the block and the impact drives them a distance of 10m before they come to rest. If the coefficient of kinetic friction between the ...
Wednesday, May 9, 2012 at 9:13pm by Sarah

Physics
Two blocks with masses m1 = 1.40 kg and m2 = 3.00 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 0.390.In the figure m1 is on top of a horizontal table ...
Wednesday, March 6, 2013 at 9:14pm by Heidi

Physics
A freely hanging block of mass 5 kg is attached to a massless string which is wrapped around a pulley of mass 10 kg and radius 0.1 m. What is the acceleration of the block?
Monday, July 22, 2013 at 8:42pm by Katie Middleton

physics
A 450 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.670, and the coefficient of kinetic friction is 0.380. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume ...
Monday, October 17, 2011 at 10:24am by carlton

physics
A 1.39-kg block slides across a rough surface such that it slows down with an acceleration of 1.43 m/s2. What is the coefficient of kinetic friction between the block and the surface?
Thursday, October 6, 2011 at 12:26am by Jamin

Physics
A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?
Saturday, November 17, 2012 at 5:33pm by Lyna

Physics
A 1.31-kg block slides across a rough surface such that it slows down with an acceleration of 1.39 m/s2. What is the coefficient of kinetic friction between the block and the surface?
Saturday, November 17, 2012 at 7:57pm by Caleb

Physics
A block of mass 3.1 kg hangs vertically from a frictionless pulley of mass 5.9 kg and radius 14 cm. Treat the pulley as a disk. Find: a) the acceleration of the block; b) the tension in the rope; c) the speed of the block after it has fallen 55 cm, assuming it started at rest:
Monday, November 28, 2011 at 3:53pm by warrren

Science
A block of mass 3.1 kg hangs vertically from a frictionless pulley of mass 5.9 kg and radius 14 cm. Treat the pulley as a disk. Find: a) the acceleration of the block; b) the tension in the rope; c) the speed of the block after it has fallen 55 cm, assuming it started at rest:
Wednesday, November 30, 2011 at 5:44pm by John

Physics
A horizontal force of 100 N pushes a 12kg block up a frictionless incline that makes an angle 25degrees with the horizontal. What is the normal force that the incline exerts on the block and what is the acceleration of the block? I found part (a) which is the normal force. It ...
Monday, September 20, 2010 at 7:39pm by Anonymous

Physics Urgent please help
Consider an ideal spring that has an unstretched length l_0 = 3.5 m. Assume the spring has a constant k = 36 N/m. Suppose the spring is attached to a mass m = 8 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x_0 = 1.9 m ...
Saturday, October 12, 2013 at 4:11am by akha

physics
A mass m = 14.0 kg is pulled along a horizontal floor with NO friction for a distance d =8.7 m. Then the mass is pulled up an incline that makes an angle θ = 27.0 with the horizontal and has a coefficient of kinetic friction μk = 0.41. The entire time the massless ...
Monday, October 1, 2012 at 6:32pm by need of help

Physics
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of 3.2N is applied to the larger block, what is the acceleration of the smaller block. Describe all external forces that are acting on the two blocks
Sunday, November 25, 2012 at 5:01pm by Tim

Physics
Two blocks, (Mass of block 1 = 2.3kg, Mass of block 2 = 1.2kg), are in contact on a frictionless table. If a horizontal force of 3.2N is applied to the larger block, what is the acceleration of the smaller block. Describe all external forces that are acting on the two blocks
Sunday, November 25, 2012 at 9:05pm by Tim

Physics/mats
Two blocks with masses m1 = 1.40 kg and m2 = 3.00 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 0.390.In the figure m1 is on top of a horizontal table ...
Thursday, March 7, 2013 at 11:58am by HP

Physics
Hi, I've been having issues with solving this problem. Could anyone help? Two blocks, of masses M = 2.0 kg and 2M are connected to a spring of spring constant k = 215 N/m that has one end fixed, as shown in the figure below. The horizontal surface and the pulley are ...
Sunday, March 21, 2010 at 3:09pm by Jack

Physics
The coefficient of static friction between a block and a horizontal floor is 0.42, while the coefficient of kinetic friction is 0.17. The mass of the block is 3.9 kg. If a horizontal force is slowly increased until it is barely enough to make the block start moving, what is ...
Wednesday, January 26, 2011 at 9:37pm by Sarah

physics
A puck on a horizontal, frictionless surface is attached to a string that wraps around a pole of finite radius, as shown in the figure . As the puck moves along the spiral path, does its speed increase, decrease, or stay the same?
Sunday, January 22, 2012 at 7:28pm by Patrick

Physics
A hanging mass, M1 = 0.78 kg, is attached by a light string that runs over a frictionless pulley to a mass M2 = 1.48 kg that is initially at rest on a frictionless table. Find the magnitude of the acceleration, a, of M2 in m/s^2.
Thursday, May 24, 2012 at 11:57am by James

physics
an 8g bullet is shot into a 4kg block, at rest on a frictionless surface. the bullet remains lodged in the block. the block moves into a spring and compresses it 9.40cm. the force constant of the spring is 1000 N/m. a) what is the initial velocity of the bullet b) how much ...
Friday, July 22, 2011 at 10:38pm by Anonymous

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