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A 2kg block slides down a plane inclined at 36 degrees with the horizontal. The block...

A 2kg block slides down a plane inclined at 36 degrees with the horizontal. The block slides 10m along the incline. How much work is done by the normal force acting on the block?

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Answer #1

Workdone W = Force x Displacement x  cos(\theta)

As normal force is pependicular to the displacement, workdone by normal force is equal to ZERO.

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