Work On Inclined Planes Video Lessons

Concept

# 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?

What scientific concept do you need to know in order to solve this problem?

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