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A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. The mass of the box is m. The ramp is inclined at an angle of ? above the horizontal.

1. If the ramp if frictionless, how much work is done by the horizontal force as the box moves a distance d up the ramp? Your answer should only contain the parameters m, d, ?, and the physical constant g.?

2. If the coefficient of kinetic friction between the box and the ramp is ?k, how much work is done by the horizontal force as the box moves a distance d up the ramp? Your answer should only contain the parameters m, d, ?, ?k, and the physical constant g.?

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Category:- Physics
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