Problem: A box of weight w = 2.0N accelerates down a rough plane that is inclined at an angle 30° above the horizontal. The normal force acting on the box has a magnitude n = 1.7 N, the coefficient of kinetic friction between the box and the plane is μk=0.30, and the displacement of the box is 1.8 m down the inclined plane.What is the work Ww done on the box by the weight of the box?

FREE Expert Solution

w = mg = 2.0 N

θ = 30°

Displacement along incline = 1.8 m

Work done = opposite of change gravitational potential energy (U = mgh)

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Problem Details

A box of weight w = 2.0N accelerates down a rough plane that is inclined at an angle 30° above the horizontal. The normal force acting on the box has a magnitude n = 1.7 N, the coefficient of kinetic friction between the box and the plane is μk=0.30, and the displacement of the box is 1.8 m down the inclined plane.

What is the work Ww done on the box by the weight of the box?

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