Question

18.

A 34.5 kg box initially at rest is pushed 5.75 m along a rough, horizontal floor with a constant applied horizontal force of 150 N. If the coefficient of friction between box and floor is 0.300, find the following.

(a) the work done by the applied force

___J

(b) the increase in internal energy in the box-floor system due to
friction

___J

(c) the work done by the normal force

___J

(d) the work done by the gravitational force

___J

(e) the change in kinetic energy of the box

___J

(f) the final speed of the box

___m/s

Answer #1

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d = 80.0 m
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(a)
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