Our topic is STATIC AND KINETIC FRICTION. Give a detailed explanation and clear image for the solution. I add formula together with the problem if it can make it a lot easier for you to answer it but if its not related to the problem, kindly disregard it. Thank you. 2. In the figure below, suppose you try to move the crate by tying a rope aroundit and pulling upward on the rope at an angle of 24° above the horizontal.(a) Draw the free-body diagram of the crate(b) How hard do you have to pull to keep the crate moving with constantvelocity? Is this easier or harder than pulling horizontally? Assume w = 300N and uk = 0.36.240 Static friction fs is the force acting on an object when FA (applied force) is less than orequal to the product of µs (coefficient of static friction) and FN (normal force).fs < µsFN (magnitude of static friction)FMAX(the equality holds true when fs is at maximum)When you try to push a heavy load and it did not move then your applied force is sosmall that the static friction cancels its effect. But the time that you strongly applied aforce on the heavy load, the kinetic friction fk took place right after fs reaches itsтаxiтum.fk = HKFN(magnitude of static friction)

According to Newton second law F = ma Frictional force = uN

2. In the figure below, suppose you try to move the crate by tying a rope around it and pulling upward on the rope at an angle of 24° above the horizontal. (a) Draw the free-body diagram of the crate (b) How hard do you have to pull to keep the crate moving with constant velocity? Is this easier or harder than pulling horizontally? Assume w = 300 N and uk = 0.36. 240

2. In the figure below, suppose you try to move the crate by tying a rope around it and pulling upward on the rope at an angle of 24° above the horizontal. (a) Draw the free-body diagram of the crate (b) How hard do you have to pull to keep the crate moving with constant velocity? Is this easier or harder than pulling horizontally? Assume w = 300 N and uk = 0.36. 240

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 4PE: Suppose you have a 120-kg wooden crate resting on a wood floor. (a) What maximum force can you exert...

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