Question

Notify Me Bookmark

A 100 N box is initially at rest on a rough horizontal surface. The coefficient of static friction between the block and the surface is 0.6 and the coefficient of kinetic friction is 0.4 . A man decides to move the box so he applies a steadily increasing horizontal force FApplied on the box to the right as shown. The graph on the left below shows the horizontal force FApplied on the box as it goes from 0 to 80 N as a function of time over 4 seconds. In the graph on the right below, sketch the frictional force exerted on the box by the surface as a function of time. Explain.

A 100 N box is initially at rest on a rough horizontal surface. The coefficient of static friction between the block and the surface is 0.6 and the coefficient of kinetic friction is 0.4 . A man decides to move the box so he applies a steadily increasing horizontal force FApplied on the box to the right as shown. The graph on the left below shows the horizontal force FApplied on the box as it goes from 0 to 80 N as a function of time over 4 seconds. In the graph on the right below, sketch the frictional force exerted on the box by the surface as a function of time. Explain.

Image text
NT5H-CRT97: BoX PULLEd ON ROUGH SURFACE-FRICTIONAL FORCE VS. TIME A 100 N box is initially at rest on a rough horizontal surface. The coefficient of static friction between the block and the surface is 0.6 and the coefficient of kinetic friction is 0.4 . A man decides to move the box so he applies a steadily increasing horizontal force F Anmes on the box to the right as shown. The graph on the left below shows the horizontal force F Antied on the box as it goes from 0 to 80 N as a function of time over 4 seconds.
In the graph on the right below, sketch the frictional force exerted on the box by the surface as a function of time.
Explain.

Detailed Answer

0 0

Please enter your email here. You will get email when this question is answered by our tutor.

Doubtrix Logo

Problem is not yet solved!

Click on Notify me to get email when question is answered.

Join Doubtrix with 7-days free trial

  • Icon Correct & Verified Answers
  • Icon No AI-Generated Answers
  • Icon Video Solution for Difficult Questions
  • Icon Work With Experts to Reach at Correct Answers
Notify me Login Sign Up

Similar/Related Questions

A 4.9 kg block is on a horizontal surface. A person pushes horizontally on the block. The coefficient of static friction between block and surface is 0.21 and the coefficient of kinetic friction is 0.19. The block is initially at rest when a pushing force of 16.9 N is applied. During the segment of time that this push is applied, the surface below applies a friction force of magnitude N.
Solution
0 0

A block of mass m sits on top of a slab of mass 4 m. The slab rests on a frictionless floor. The coefficient of static friction between the slab and the block is 0.60 whereas the coefficient of kinetic friction is 0.40 . The block is now pulled by a horizontal force of magnitude F to the left. (a) It is observed that the blocks move together as a system. In this case, is the friction between the contact surfaces of the block and the slab static friction or kinetic friction? Justify. (b) If m = 10 kg, what is the maximum value of the applied horizontal force, F for which the slab and the block move together as a system? (c) If the applied horizontal force is increased beyond the value you determined in part (b), describe what would be the change, if any, in the motion of the block and slab. Explain. (d) For F = 100 N, what would be the accelerations of the slab and the block individually if you expect them to be different?
Solution
0 0

Learning Goal: Static and Kinetic Friction Short Calclations A 25.0 kg wooden crate rests on a wood floor. The coefficient of static friction between the wood crate and the wood floor is μs = 0.53. The coefficient of kinetic friction between the wood crate and the wood floor is 0.44. You pull on the rope attached to the crate. The magnitude of the gravitational acceleration is 9.80 m/s2. Part A - What maximum force (in Newtons) can you exert horizontally on the crate without moving it? Part B - If you pull on the crate with a 38.96 N horizontal force, what is the magnitude of the frictional force? Part C - Now you increase the pulling force gradually to the value in Part A, the crate will start moving. Notice that the type of frictional force will change and the magnitude will also change. After the crate starts moving, your pulfing force remains at the value in Part A. What will be the crate's acceleration? As shown in the same crate from the above parts rests on the same wooden floor. A 100 N force presses on the crate from above. Part D - What is the magnitude of the normal force on the crate by the floor? Part E - What is the minimum horizontal pulling force (in Newtons) to make the crate start moving?
Solution
0 0