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A block of mass 5 kg is held against a w...

A block of mass `5 kg` is held against a wall with a force of `100 N`. as shown om figure. It is moved horizontally slowly by applying a force parallel to the wall. Then the fricational force on the block due to wall is `25x` newton. Find `x`. (Given `mu = 0.5` and `g = 10 m//sec^(2)`)

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The correct Answer is:
2
Since the block is sliding so friction force acting on the block is `50 N`.
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