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Two plates A and B kept on horizontal su...

Two plates `A` and `B` kept on horizontal surface. Force `F` is applied as shown. If minimum coefficient of friction between them is `(n)/(4)` to keep them in equilibrium. Calculate `n`.

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The correct Answer is:
3


`N sin 37^(@)=mu N cos 37^(@) mu=tan 37^(@)=(3)/(4)n=3`
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