Question

As shown in the figure below, a box of mass
m = 57.0 kg
(initially at rest) is pushed a distance
d = 79.0 m
across a rough warehouse floor by an applied force of
FA = 202 N
directed at an angle of 30.0° below the horizontal. The coefficient of kinetic friction between the floor and the box is 0.100. Determine the following. (For parts (a) through (d), give your answer to the nearest multiple of 10.)
(a) The work done by the applied force:

14,400 J

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