Question

why is the work done by the frictional on a body sliding on a surface​

Answer 1

ᗩᑎᔕᗯEᖇ

• Since the frictional force acting on a body sliding down acts in direction opposite to the direction of displacement of block, the work done is negative.

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Answer 2

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• since the frictional force acting on an object sliding down act in direction opposite to direction of displacement of block, the work done is negative