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A block of mass m in the equilib rium on...

A block of mass m in the equilib rium on a rough inclined plane with inclination `alpha` and coefficient of friction as shown in the figure `(mu < tan alpha)`. A force F is applied on the block which makes an angle `theta` with the horizontal as shown in diagram.

A

Normal force on the block `mg cos alpha+ F sin theta`.

B

Minimum force f to keep the blockin equilibrium `F_("min")=(mg(sin alpha- mu cos alpha))/(2mu) sqrt(1+mu^(2))`

C

`mu=tan theta`

D

None of these

Text Solution

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The correct Answer is:
A, C
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