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Surface Irregularities

In which dire...

Question

In which direction does friction act, when a block is moved up the inclined plane?

A

Normal to inclined plane

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B

Parallel to inclined plane

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C

Parallel and in downward direction along the inclined plane

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D

Normal and in upward direction along the inclined plane

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Solution

The correct option is C
Parallel and in downward direction along the inclined plane

Force of friction acts parallel and in downward direction when the block is moved along the inclined plane in upward direction.

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