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In the adjoining figure, the coefficient...

In the adjoining figure, the coefficient of friction between wedge (of mass `M`) and block (of mass `m`) is `mu`.
Find the minimum horizontal force `F` required to keep the block stationary with respect to wedge.

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This problem can be solved with or without using the concept of pseude force. Let us solve the problem by both the methods.
`a=`acceleration of (wedge + block)in horizontal direction
`=(F)/((M+m)`
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