Suppose a block of mass m is placed onto a horizontal surface and a horizontal pulling...
- Suppose a block of mass m is placed onto a horizontal surface and a horizontal pulling force P is applied to the block. Draw a free-body diagram for the block and apply Newton’s 2nd law to the block.
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- Suppose that a horizontal applied force P begins pulling on the block with a steadily increasing force, starting from an applied force of zero. Once static friction is overcome, the applied force is quickly adjusted such that the block moves with a constant speed. Sketch a plot of the applied force versus time. Your plot does not need include numeric scales on the x and y axes.
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- For the time that static friction is occurring in your plot, what is the acceleration of the block? How does the static frictional force fs relate to the applied force P?
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For the time that kinetic friction is occurring in your plot, what is the acceleration of the block? How does the kinetic frictional force fk relate to the applied force P?
Homework Answers
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Suppose a block of mass m is placed onto a horizontal
surface and a horizontal pulling...
A Friction Experiment During an experiment, a crate is pulled along a rough horizontal surface by a force F⃗ a...
A Friction Experiment
During an experiment, a crate is pulled along a rough horizontal
surface by a force F⃗ and the magnitude of the
acceleration along the x direction, ax ,
is measured.(Figure 1) The vector F⃗ has a component along
the x direction of magnitude Fx . The
experiment is repeated several times, with different values of
Fx each time, while maintaining a constant value
for, Fy , the vertical component of F⃗
.
Part A
Create a plot...
Side 7. A 10.0 kg block is at rest on a rough horizontal surface. A force...
Side 7. A 10.0 kg block is at rest on a rough horizontal surface. A force of F - 50.0N @ 35° is applied to the vie block, as shown below. The coefficients of static and kinetic friction between the block and the horizontal surface are: Hs = 0.55 and thk = 0.35. Will the block move? If not, explain why not. If so, determine its acceleration. Your answer must include a free-body diagram. (Hint: compare the horizontal component of...
A block is resting on a horizontal surface. The mass of the block is 40 kg....
A block is resting on a horizontal surface. The mass of the block is 40 kg. The coefficient of static friction between the block and the surface is us = 0.3 and the coefficient of kinetic friction is uk = 0.20. A man then decides to push on the block with 30 newtons of horizontal force. a) What is the acceleration of the block? Explain. b) Suppose the man pushes on the block with 200 newtons instead. What is the...
A block of mass M is sitting on a friction-less horizontal surface. A second block of...
A block of mass M is sitting on a friction-less horizontal surface. A second block of mass m is sitting on top of the first block. The (horizontal) interface between the two blocks is characterized by a static friction coefficient µ. The acceleration of gravity is g. Find the max horizontal force F that can be applied to the lower block such that the upper block does not slide off it.
QUESTION 5 A mass of 12 kg is placed on a horizontal surface with friction with...
QUESTION 5 A mass of 12 kg is placed on a horizontal surface with friction with a coefficient of static friction of 0.81 and coefficient of kinetic friction of 0.44. A force of 13 Newtons is applied in the -y direction and a force of 16 Newtons is also applied in the -y direction. Another force is applied in the +x direction (see sketch). The force applied in the +x direction is increased until it is 1.9 times the force...
A block of mass m= 15 kg is pulled along a flat surface with a horizontal...
A block of mass m= 15 kg is pulled along a flat surface with a horizontal force F = 135 N. The force of kinetic friction between the mass and the surface is fk = 30 N. What is the acceleration of the block? 9.0 m/s2 7.0 m/s2 4.5 m/s2 2.0 m/s2
A person is pulling a 40kg block of ice across an icey surface at an angle...
A person is pulling a 40kg block of ice across an icey surface at an angle of 25 degrees. If the person is pulling with a force of 42N, what is the magnitude of the acceleration of the block of ice? Ignore Drag Coefficient of Static Friction= 0.1 Coefficient of Kinetic Friction = 0.03 Please show how you did it so I can learn.
A block of mass m=2kg is placed on a horizontal surface with which its coefficient of...
A block of mass m=2kg is placed on a horizontal surface with which its coefficient of kinetic friction is 0.5. Determine the magnitude of the force applied to the block at an angle of 53 degrees above the horizontal that would accelerate the block at 2 m/s^2.
Please help A. A block is pulled along a horizontal surface by a force of 12.0...
Please help
A. A block is pulled along a horizontal surface by a force of 12.0 N. The block has a mass of 4.00 kg and it accelerates at 2.00 m/s. Find the coefficient of kinetic friction for the interface between the block and the surface. B. A stone falls vertically through the air and experiences a drag force. If the stone's mass is 6.00 kg. and the drag force (upwards force) is 14.0 N, what is the acceleration of...
1. A block with weight W = 30 N is on a flat horizontal surface. You...
1. A block with weight W = 30 N is on a flat horizontal surface. You pull to the right with a force F = 16 N. There is gravity present and the coefficient of friction is static = 0.4 and kinetic - 0.25. You are also pulling straight up with an applied force of 12 N. Now what are: The normal force N-_ the frictional force f- the net force on the block Foot and acceleration a = 2....
A Friction Experiment
During an experiment, a crate is pulled along a rough horizontal
surface by a force F⃗ and the magnitude of the
acceleration along the x direction, ax ,
is measured.(Figure 1) The vector F⃗ has a component along
the x direction of magnitude Fx . The
experiment is repeated several times, with different values of
Fx each time, while maintaining a constant value
for, Fy , the vertical component of F⃗
.
Part A
Create a plot...
Side 7. A 10.0 kg block is at rest on a rough horizontal surface. A force of F - 50.0N @ 35° is applied to the vie block, as shown below. The coefficients of static and kinetic friction between the block and the horizontal surface are: Hs = 0.55 and thk = 0.35. Will the block move? If not, explain why not. If so, determine its acceleration. Your answer must include a free-body diagram. (Hint: compare the horizontal component of...
A block of mass m= 15 kg is pulled along a flat surface with a horizontal force F = 135 N. The force of kinetic friction between the mass and the surface is fk = 30 N. What is the acceleration of the block? 9.0 m/s2 7.0 m/s2 4.5 m/s2 2.0 m/s2
Please help
A. A block is pulled along a horizontal surface by a force of 12.0 N. The block has a mass of 4.00 kg and it accelerates at 2.00 m/s. Find the coefficient of kinetic friction for the interface between the block and the surface. B. A stone falls vertically through the air and experiences a drag force. If the stone's mass is 6.00 kg. and the drag force (upwards force) is 14.0 N, what is the acceleration of...
1. A block with weight W = 30 N is on a flat horizontal surface. You pull to the right with a force F = 16 N. There is gravity present and the coefficient of friction is static = 0.4 and kinetic - 0.25. You are also pulling straight up with an applied force of 12 N. Now what are: The normal force N-_ the frictional force f- the net force on the block Foot and acceleration a = 2....
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