Saturday
April 19, 2014

Search: block horizontal force speed work friction

Number of results: 82,388

Physics
A bullet of mass 0.02kg is fired at a speed of 500m/s towards a fixed wooden block of thickness 10cm. The bullet penetrates the block and emerges with a speed of 200m/s. a) Find the average retarding force on the bullet when it is passing through the block. b) Estimate the ...
Sunday, December 5, 2010 at 7:01am by laura

physics
A 20kg block is being pulled by a 150N force,the block is initially at rest,if the coefficient of frictionbetween the block and the surface is 0.3,find (a)the normal force,(b)the friction force acting on the block,(c)find the acceleration of the block
Friday, October 28, 2011 at 12:33am by amaka

physics
A bullet with mass m = 5.21 g is moving horizontally with a speed v=367 m/s when it strikes a block of hardened steel with mass M = 14.8 kg(initially at rest). The bullet bounces o the block in a perfectly elastic collision. (a) What is the speed (m/s) of the block immediately...
Thursday, December 15, 2011 at 12:56pm by Sarah

physics
an engine block of mass 275kg rest on a plane which is inclined at 13 degrees to the horizontal.if the plane can be tilted to a maximum angle of 21 degrees before the engine block slide due to its weight.calculate the minimum force parallel to the plane required to move the ...
Wednesday, October 6, 2010 at 6:16am by charles

mit physyscs
A block of mass 2 kg is initially at rest on a horizontal surface. At time , we begin pushing on it with a horizontal force that varies with time as , where 0.6 N/s . We stop pushing at time s [ for ]. (a) First, assume the surface is frictionless. What is the magnitude of the...
Friday, December 6, 2013 at 10:26am by juanpro

Physics
Three blocks on a frictionless horizontal surface are in contact with each other A force F is applied to block 1 (m1) Draw a free body diagram for each block ok for the diagram is the force F applied horizontal to mass one does this force act on m2 all the blocks are lines up ...
Saturday, July 11, 2009 at 10:11pm by Physics

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. My dear sir please help me in teaching my son and thank you very much
Sunday, July 8, 2012 at 9:42am by bbbb

Physics
A block of weight 30N lies on a horizontal table top. A force of 40N acts parallel to the surface of the table top, but does not cause the block to move. What is the magnitude of the frictional force between the block and the table?
Wednesday, June 5, 2013 at 4:02pm by Ashley

physics
A block is moving down an incline a distance of 5 m form point A to point B by a force F that is parallel to the incline and has magnitude 2 N. The magnitude of the frictional force acting on the block is 10 N. If the kinetic energy of the block increases by 35 J between A and...
Wednesday, January 10, 2007 at 8:57pm by Brian

Physics
Problem 3- A block of mass m1 = 4 kg moves from rest under the influence of a varying force F(x) = 4x + 38, where F is in newton and x is in meters, on a rough horizontal surface having a coefficient of kinetic friction of 0.2. The block is connected by a light cord passing ...
Sunday, December 1, 2013 at 11:36pm by Mariam

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg F a) What is the net force...
Friday, October 19, 2012 at 12:12am by Anonymous

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg ) What is the resultant ...
Friday, October 19, 2012 at 12:22am by Anonymous

Mechanics (M1) A level?
A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the block and the slope is 0.4. The block starts from rest at the top of the slope. a) Find the speed at which the block reaches the bottom of the slope...
Sunday, April 29, 2012 at 3:32pm by Jat

physics
A 11.1-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 3.12 m/s in 1.17 s. In the process, the spring...
Tuesday, November 13, 2012 at 7:08pm by Michelle

Physics
A mass m1 = 4.1 kg rests on a frictionless table and connected by a massless string to another mass m2 = 5.9 kg. A force of magnitude F = 32.0 N pulls m1 to the left a distance d = 0.83 m. 1) How much work is done by the force F on the two block system? 2) How much work is ...
Wednesday, January 2, 2013 at 1:27pm by Drew

General Physics
A block sliding on a horizontal surface has an initial speed of 0.5 m/s. The block travels a distance of 1 m as it slows to a stop. What distance would the block have traveled if its initial speed had been 1 m/s? 1. 2 m 2. 1 m 3. more information is needed to answer the ...
Friday, July 26, 2013 at 1:31pm by Charles

physics
A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the oscillation? (b) How ...
Sunday, January 9, 2011 at 4:59pm by kylie

Physics
A 2 kg block is pulled from rest along a horizontal surface by a rope with a force of 16 N. It experiences a constant frictional force of 3 N. How far has the block moved in the first five seconds?
Tuesday, October 9, 2012 at 12:29am by arcos15

Physics help
A 5 kg block is pulled from rest along a horizontal surface by a rope with a force of 12 N. It experiences a constant frictional force of 1 N. How far has the block moved in the first six seconds?
Friday, October 26, 2012 at 2:23am by arcos15

physics
i have noo idea how to do this, please hellppppp A 15.6 kg block is dragged over a rough, hor- izontal surface by a constant force of 72.2 N acting at an angle of angle 34.8 above the horizontal. The block is displaced 24.6 m and the coefficient of kinetic friction is 0.234. ...
Friday, February 25, 2011 at 11:23am by ally

Physics
A block of mass 9.00 kg is pushed up against a wall by a force P that makes a 50.0 angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.245. Determine the possible values for the magnitude of P that allow the block ...
Wednesday, June 6, 2012 at 6:24pm by Kathy

physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 696 N horizontal force is applied to the block with mass of 4.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s 2 . 4.7 kg 5.5 kg 7.1 kg d) What is the magnitude ...
Friday, October 19, 2012 at 12:28am by Anonymous

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

Physics
F*(horizontal distance moved) = 150*5.0*cos 32 = 636 J You don't need the mass of the block to arrive at that answer. That is more than enough horizontal force to move the block up the frictionless ramp, so Kinetic Energy will increase.
Monday, April 1, 2013 at 1:25am by drwls

physics
A 2.14 kg block is held in equilibrium on an incline of angle q = 67.7o by a horizontal force, F. If the coefficient of static friction between block and incline is ms = 0.314, determine the minimum value of F. Determine the normal force of the incline on the block.
Thursday, September 20, 2012 at 7:52am by AB

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

physics
A block of mass m = 14 kg is pressed with a horizontal force F against a frictionless ramp of angle θ = 78∘. What is the magnitude of the normal force exerted by the incline surface on the block?
Tuesday, October 1, 2013 at 2:39am by ss01

operating system
Problem 3- A block of mass m1 = 4 kg moves from rest under the influence of a varying force F(x) = 4x + 38, where F is in newton and x is in meters, on a rough horizontal surface having a coefficient of kinetic friction of 0.2. The block is connected by a light cord passing ...
Tuesday, December 3, 2013 at 11:04am by Anonymous

Physics
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force?
Wednesday, October 12, 2011 at 5:27pm by Dee

Physics
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force
Thursday, October 13, 2011 at 1:40pm by Dee

Physics please help
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between block and the incline is .436. Determine the work done by the friction force between block and incline and the work done on the normal force?
Wednesday, October 12, 2011 at 6:11pm by Dee

physics
A bullet of mass 12.4 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.02 kg, is subject to no horizontal external forces during the collision with the bullet. After the collision, the block is observed to move at a speed of 4....
Thursday, March 29, 2012 at 5:57pm by Sarah

physics
A bullet of mass 11.2 g is fired into an initially stationary block and comes to rest in the block. The block, of mass 1.01 kg, is subject to no horizontal external forces during the collision with the bullet. After the collision, the block is observed to move at a speed of 4....
Monday, April 30, 2012 at 9:12pm by Anonymous

Physics
Sally applies a horizontal force of 500 N with a rope to dtag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 67.5 degrees. a) How much force is exerted by the rope on the crate? b) What work is done by Sally if the ...
Wednesday, November 14, 2007 at 11:34pm by Elizabeth

Physics
A 4.0 kg block is stacked on top of a 12.0 kg block, whcih is accelerating along a horizontal table at a = 5.2 s^-2 m. Let Mu k = Mu s = Mu. (a) What mininum coefficent of friction Mu between the two blocks will prevent the 4.0 kg block from sliding off? (b) If Mu is only half...
Thursday, August 20, 2009 at 4:33pm by QUESTION

physics
A 3.20 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0 with the horizontal. The block accelerates to the right at 7.50 m/s2. Determine the coefficient of kinetic friction between block and ceiling. Would appreciate ...
Tuesday, January 18, 2011 at 4:34am by megan

Physics
Three blocks are in contact with each other on a frictionless horizontal surface. A 417 N horizontal force is applied to the block with mass of 3.7 kg as shown in the figure below. The acceleration of gravity is 9.8 m/s^2. (the picture looks like this) F *----->[3.7 ...
Friday, November 16, 2012 at 7:44pm by alice

physics
A 2.00 kg block is held in equilibrium on an incline of angle θ = 75 by a horizontal force applied in the direction shown in the figure below. If the coefficient of static friction between block and incline is μs = 0.300, determine the following. (a) the minimum ...
Saturday, September 29, 2012 at 3:31pm by Anonymous

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 the...
Saturday, February 10, 2007 at 5:56pm by COFFEE

Physics
A dock worker applies a constant horizontal force of 77.0 to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 9.00 in the first 7.00 . What is the mass of the block of ice? Do it in steps. First compute the ...
Tuesday, October 3, 2006 at 1:53pm by Morgan

Physics
A small block on a frictionless horizontal surface has a mass of 2.5010−2 Kg. It is attached to a massless cord passing through a hole in the surface. The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 1.75 rad/s. The cord ...
Thursday, June 25, 2009 at 11:59pm by Sarah

physics
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.0 below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force...
Monday, March 10, 2014 at 6:41pm by Mohanad

Physics
A 45 kg trunk is pushed 7.8 m at constant speed up a 30 incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is 0.23. a)Calculate the work done by the applied horizontal force. b)Calculate the work done by the weight of...
Friday, October 23, 2009 at 3:41pm by Rachel

Physics
A 15.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.460 s. In the process, the ...
Thursday, November 29, 2012 at 12:59am by Elizabeth

Physics
A 15.0-kg block rests on a horizontal table and is attached to one end of a massless, horizontal spring. By pulling horizontally on the other end of the spring, someone causes the block to accelerate uniformly and reach a speed of 5.00 m/s in 0.460 s. In the process, the ...
Friday, November 30, 2012 at 8:04pm by Elizabeth

Physics
A force of 40 N is applied at an angle of 30oabove the horizon to a 5 kg block that is at rest on a rough horizontal surface. After the block starts to move with an acceleration of 3 m/s2, what is the coefficient of kinetic friction between the block and the horizontal surface...
Friday, May 15, 2009 at 12:02pm by Angela

Physics
A force of 9.4N pulls horizontally on a 1.2-kg block that slides on a rough, horizontal surface. This block is connected by a horizontal string to a second block of mass m2 = 2.00kg on the same surface. The coefficient of kinetic friction is μk = 0.25 for both blocks. ...
Tuesday, March 18, 2014 at 6:21pm by Sally Mae

physics
A horizontal force of 804 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using a rope held at an angle of 32 (from the horizontal). (a) What force do you exert on the rope? 1 N (b) How much work do you do on the crate if you ...
Monday, December 12, 2011 at 12:40am by Anonymous

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
A force of 40 N is applied at an angle of 30oabove the horizon to a 5 kg block that is at rest on a rough horizontal surface. After the block starts to move with an acceleration of 3 m/s2, what is the coefficient of kinetic friction between the block and the horizontal surface...
Thursday, May 14, 2009 at 11:44pm by Angela

physics
Let Ff = Force of Friction Let C = Coefficient of Friction Let N = Normal force Ff = CN The required force to just get a block moving along at a constant velocity will also be equal to the force of friction (Ff) if there is nothing else acting on the horizontal plane. N can be...
Monday, January 17, 2011 at 1:44pm by EssKay

Physics
A block of mass 7.5 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of 31.0 N at an angle 26.3 above the horizontal. What is the magnitude of the acceleration of the block? I have nooo clue what to do for this one. Can someone please show me ...
Monday, November 26, 2007 at 5:36pm by Lindsay

Physics
Suppose the block is released from rest with the spring compressed 5.50 cm. The mass of the block is 1.60 kg and the force constant of the spring is 965 N/m . Assume the surface is frictionless. A) What is the speed of the block when the spring expands to a compression of only...
Sunday, May 26, 2013 at 3:27pm by Leah

physics
A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the oscillation? (b) How ...
Sunday, January 9, 2011 at 8:56pm by Anonymous

Physics
A force of 15 N is applied at an angle of 30 degrees with the horizontal on a 0.75 block at rest on a frictionless surface. a. What is the magnitude of the resulting acceleration of the block? b. What is the magnitude of the normal force?
Sunday, December 4, 2011 at 6:53am by Tomomi

Math/Physics2
The block has mass m=8.5 kg and lies on a fixed smooth frictionless plane tilted at an angle theta=20.0 degrees to the horizontal. Determine the acceleration of the block as it slides down the plane. If the block starts from rest 15.0 m up the plane from its base, what will be...
Wednesday, September 23, 2009 at 3:38pm by Era

physics
A bullet of mass 4.7 g is fired horizontally into a 2.4 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.28. The bullet stops in the block, which slides straight ahead for 2.2 m (without rotation). (a) What is ...
Tuesday, November 8, 2011 at 1:12pm by Mark

physics
A 5.00 g bullet moving with an initial speed of 340 m/s is fired into and passes through a 1.00 kg block. The block, initially at rest on a frictionless, horizontal surface, is connected to a spring of force constant 860 N/m. (a) If the block moves 5.50 cm to the right after ...
Monday, March 23, 2009 at 10:19pm by Jennifer

General Physics
A 4 kg block slides along a frictionless horizontal with a speed of 5.1 m/s. After sliding a distance of 7 m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 13 degrees to the horizontal. The acceleration of gravity is 9.81 m/s2. How far up ...
Friday, July 26, 2013 at 1:42pm by Charles

physics lab
A bullet is shot into a block of plastic. The bullet penetrates the block 0.75 m. The mass of the bullet is 8 g. It is traveling with a speed of 410 m/s before it hits the block. A Use kinematic equations to find the magnitude of the acceleration on the bullet as it is ...
Wednesday, February 16, 2011 at 2:33pm by Johnathon

Physics
The block in lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 56 N/m. Initially, the spring is at its relaxed length and the block is stationary at x = 0 m. Then an applied force with a constant magnitude of 3.0...
Sunday, January 17, 2010 at 9:17pm by Aaron

physics
A 0.57 kg block oscillates back and forth along a straight line on a frictionless horizontal surface. Its displacement from the origin is given by x = (13 cm)cos[(20 rad/s)t + π/2 rad] (a) What is the oscillation frequency (in Hz)? (b) What is the maximum speed acquired ...
Sunday, January 9, 2011 at 8:09pm by Anonymous

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 from...
Tuesday, November 8, 2011 at 10:44pm by marvin

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 from...
Tuesday, November 8, 2011 at 11:00pm by marvin

Physics
A 46.5 kg block sits at rest on a frictionless, horizontal surface. It is connected horizontally, via a massless, ideal spring to a stationary wall. A force is then used to displace and hold the block in a new position (so that the spring is compressed). Then the block is ...
Friday, December 4, 2009 at 3:41pm by John

Physics Classical Mechanics Help ASAP
I assumed that Normal force exerted by the sliding block on track-block will give that track-block some velocity over time whcih it takes for the sliding block to reach the bottom of the track. So I found(but not sure about it) that Normal Force = sin (Theta) * m*g - it is the...
Friday, January 10, 2014 at 8:03am by Ilya

physics
A block lies on a smooth plane tilted at an angle = 28.5 to the horizontal. Ignore friction. (a) Determine the acceleration of the block as it slides down the plane. 1 m/s2 (b) If the block starts from rest 9.40 m up the plane from its base, what will be the block's speed ...
Tuesday, December 7, 2010 at 6:27pm by An

Physics
the only part i cant figure out is the max static friction force that acts on the block. please help show me how to find it Suppose a block with mass 2.00 kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.320, what maximum angle...
Saturday, May 21, 2011 at 11:52am by sarah

physics
a shopper in a supermarket pushes a cart with a force of 35 n directed at an angle of 25 downward from the horizontal. the force is just sufficient to over come the various frictional force, so the cart moves at constant speed. what is the net work dont on the cart? why? the ...
Thursday, September 23, 2010 at 11:07pm by physics help please!!!

physics
A 100 kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal. There is a coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface that the ...
Friday, May 14, 2010 at 2:25pm by Steven

physics
Find the coefficient of kinetic friction between a 4.3- block and the horizontal surface on which it rests if an 80 spring must be stretched by 2.7 to pull the block with constant speed. Assume the spring pulls in a direction 13 above the horizontal.
Wednesday, January 19, 2011 at 8:26pm by emily

Phys
Three blocks on a frictionless horizontal surface are in contact with each other. A force F is applied to block A (mass mA). (a) Draw a free body diagram for each block. I've drawn it and it looks like this, but I'm not sure if I'm including everything. ^normal force F-->|...
Thursday, February 7, 2013 at 2:15pm by anonymous

physics
A block is attached to a horizontal spring and set in simple harmonic motion, as shown in the figure. At what point in the motion is the speed of the block at its maximum? The position of the block when the spring is relaxed is marked by x = 0, and the extremes of the block\'s...
Friday, April 11, 2014 at 8:05pm by Paige

Physics
A particular sprinter reaches a horizontal acceleration of 13.3 m/s2 out of the starting block. The starting block is tilted such that the vertical component of the force which the starting block exerts on the sprinter compensates for the weight of the sprinter, leading to a ...
Friday, October 2, 2009 at 3:47pm by Stephanie

Physics
The 500 N Sally applies must be the horizontal component of the appied force, not the total force (which is the ripe tension) The horizontal force component is T cos 67.5 = 500 N Therefore T = 1306 N b) Sally's Work = (horizontal force component) x (distance moved) = 500 N x ...
Wednesday, November 14, 2007 at 11:34pm by drwls

physics
A 3.5 kg block, initially in motion, is pushed along a horizontal floor by a force F of magnitude 19 N at an angle θ = 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.)
Thursday, November 18, 2010 at 6:05pm by maya

Physics
A 5 kg block is placed on top of a 10 kg block as shown above. A horizontal force of 45 N is applied to the 10 kg block, while the 5 kg block is tied to the wall. The coefficient of kinetic friction between the moving surfaces is 0.20. Determine (a) the tension in the string ...
Sunday, February 23, 2014 at 2:39am by Chrxeyshthoufov

physics
a 3.5 kg block is accelerated from rest by a compressed spring of spring constant 640 N/m. The block leaves the spring at the springs relaxation length.The block then travels over a horizontal floor with coefficient of kinetic friction 0.25. The friction force stops the block...
Tuesday, November 23, 2010 at 6:16pm by help

Physic 115
A 5 kg block is placed on an inclined plane raised to angle theta with the horizontal when it just started to slip down. If coefficient of friction is 0.3, calculate theta and the speed of the block up the plane if it being pull up by a force of 30 newton
Thursday, December 20, 2012 at 6:03pm by Yahaya

Physics
The first thing I would ask is about the interface between the blocks, frictionless or not. If the interface is frictionless, the left block slides to the right and UP, and the right moves to the right. IN THAT CASE, consider this: left horizontal force: 112cos30=figure it ...
Friday, May 25, 2012 at 5:00pm by bobpursley

Physics
A 10 kg block sits on a flat surface whose μs=0.60 and whose μk is 0.40 a. What horizontal force is required to get the block move? b.If we continue to apply the same force as in part a. what will the blocks acceleration be? In the answer: force=.6*mg to move net ...
Sunday, August 26, 2012 at 9:22pm by Lianne

physics
a 100N force is applied at an angle of 30 degrees horizontal to move a 15kg object at a constant speed for a horizontal distance of 5m what would the work be
Tuesday, November 20, 2012 at 7:31pm by Layne

physics
That depends upon the force needed to pull the first block, before the second block was added. It also depends upon whether the two blocks are still being pulled at constant speed. Presumably the force is needed to overcome friction. If the same kind of wood is in contact in ...
Tuesday, October 18, 2011 at 3:01pm by Joe the plumber

physics
A block of mass m = 4 kg slides along a horizontal table when it encounters the free end of a horizontal spring of spring constant k = 14 N/m. The spring is initially on its equilibrium state, defined when its free end is at x=0 . Right before the collision, the block is ...
Tuesday, October 15, 2013 at 1:38pm by ss01

physics
A 13.9 kg block is dragged over a rough, horizontal surface by a 70.7 N force acting at 19.8 degrees above the horizontal. The block is displaced 4.55 m, and the coefficient of kinetic friction is 0.298. How much energy is lost due to friction?
Saturday, October 31, 2009 at 12:19pm by Anonymous

physics
A light spring with force constant 3.00 N/m is compressed by 6.00 cm as it is held between a 0.350 kg block on the left and a 0.700 kg block on the right, both resting on a horizontal surface. The spring exerts a force on each block, tending to push them apart. The blocks are ...
Tuesday, November 9, 2010 at 4:16am by natalie

physics
A block of mass = 0.85 kg is connected to a spring of force constant = 775N/m on a smooth, horizontal surface. 1) Plot the potential energy of the spring from = -5.00 cm to = 5.00 cm. 2) Determine the turning points of the block if its speed at x = 0 is 1.1 m/s I am so stumped...
Sunday, October 16, 2011 at 4:53pm by leeece

physics
A block of mass = 0.85 kg is connected to a spring of force constant = 775N/m on a smooth, horizontal surface. 1) Plot the potential energy of the spring from = -5.00 cm to = 5.00 cm. 2) Determine the turning points of the block if its speed at x = 0 is 1.1 m/s I am so stumped...
Sunday, October 16, 2011 at 4:58pm by leeece

physics
A horse pulls a cart with a force of 40lb at an angle of 30 degrees above the horizontal and moves along at a speed of 6mi/hr. A) how much work does the force do in 10 min? B) What is the average power (in horsepower) of the force?
Sunday, July 18, 2010 at 5:55pm by James

physics
In the system shown in the figure, suppose the block has a mass of 3.3 , the spring has a force constant of 490 , and the coefficient of kinetic friction between the block and the floor is 0.13. Find the work done on the block by the spring and by friction as the block is ...
Thursday, December 8, 2011 at 6:36pm by Patrick Jarvis

Physics
A bullet with a mass m=12.5 g and speed v=85.4 m/s is fired into a wooden block with M=113 g which is initially at rest on a horizontal surface. The bullet is embedded into the block. The block-bullet combination slides across the surface for a distance d before stopping due ...
Thursday, October 25, 2012 at 6:45pm by Devin

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 magnitude...
Thursday, May 10, 2012 at 11:20pm by Anonymous

physics
The 2 kg block in Figure 7-25 slides down a frictionless curved ramp, starting from rest at a height of h = 3 m. The block then slides d = 12 m on a rough horizontal surface before coming to rest. Figure 7-25 (a) What is the speed of the block at the bottom of the ramp? (b) ...
Sunday, January 30, 2011 at 6:09pm by Sierra

science
at a construction site a crane lifts a block of mass,m,vertically upwards through a height of 70 m at constant speed by means of a strong cable.The block experiences a force of magnitude 8 N as a result of air friction as it is lifted vertically upwards. The cable does 377 860...
Tuesday, March 26, 2013 at 10:08am by Thalente

Physics-Please help with formula
A 50KG BLOCK IS BEING PULLED BY A 200N FORCE ON A HORIZONTAL ROUH SURFACE AS SHOWN IN THE DIAGRAM.IF THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE BLOCK AND THE SURFACE IS 0.3, FIND THE ACCELERATION OF THE BLOCK.
Tuesday, December 7, 2010 at 11:01am by BAKO

Physics
horizontal force=friction=8.62cos17 vertical force on block up=8.62sin17 friction force=mu(3.42g-8.62sin17) set this equal to the horizontal force, and solve for mu
Thursday, April 18, 2013 at 9:50pm by bobpursley

physics
if the weight of the block,W,is 2.5 kilogram,the coefficient of static friction,0.25,and the coefficient of kinetic friction,0.15,determine: (a) the force necessary to hold the block sliding down (b) the force necessary to pull the block up the plane with uniform speed
Wednesday, March 6, 2013 at 9:21am by helpppp meeeeeeee PHYSICS.........................

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

Physics
A luggage handler pulls a 20kg suitcase up a ramp inclined at 25 degrees above teh horizontal by a force F of magnigutde 145N that acts parallel to the ramp. The coefficient of kinetic friction between teh ramp and the incline is .30. If the suitcase travels 4.6 m along the ...
Thursday, January 18, 2007 at 4:19pm by Jamie

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