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The figure below shows a system of two masses connected by a string. As m falls a distance h, M accelerates up the plane. The coefficient of friction between M and the inclined plane is µ.


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(a) What is the change in potential energy on the system after m has fallen a distance h?

(b) What is the work done by friction on the system?

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Amal Jeeva
Amal JeevaLv10
11 Oct 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A box of weight w=2.0N accelerates down a rough plane that is inclined at an angle of 30degree above the horizontal, as shown (Figure 6). The normal force acting on the box has a magnitude n=1.7N, the coefficient of kinetic friction between the box and the plane is uk=0.30, and the displacement d? of the box is 1.8 m down the inclined plane.


Part a. What is the work W_n done on the box by the normal force?

Part b. What is the work done on the box by the force of kinetic friction?

 

1. A block is placed on a plane whose angle of inclination is 30˚. The coefficients of static and kinetic friction for the block on the inclined plane are both 0.2. The block
(A) remains stationary on the inclined plane.
(B) accelerates down the inclined plane.
(C) travels down the inclined plane at a constant velocity.
(D) travels up the inclined plane at a constant velocity.
(E) accelerates up the inclined plane.

2. An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. The plane makes an angle of 30˚ with the horizontal and is 72 m long. The coefficient of friction between the plane and the object is 0.35. The speed of the object at the bottom of the plane is?

3. A 5-kg object slides down a frictionless surface inclined at an angle of 30˚ from the horizontal. The total distance moved by the object along the plane is 10 meters. The work done on the object by the normal force of the surface is?

4. A mass m = 2.5 kg is sliding along a frictionless table with initial speed v as shown in the figure. It strikes a coiled spring that has a force constant k = 500 N/m and
compresses it a distance x=5.0 cm. The initial speed v of the block was..?



5. The graph shows how the position of a particle depends on time. Which choice is closest to the instantaneous speed of the particle at t = 3s?
(A) 0.40 m/s
(B) 0.67 m/s
(C) 0.75 m/s
(D) 1.50 m/s
(E) 2.22 m/s



6. Calculate the work done by a force, F = 2x i, along the
path (0, 0) -> P1(2, 0) -> P2(2, 2).



Objects with masses m1 = 8.0 kg and m2 = 5.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. If, when the system starts from rest, m2 falls 1.00 m in 1.70 s, determine the coefficient of kinetic friction between m1 and the table.

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