Two identical ladders, each of mass M an...

Two identical ladders, each of mass M and length L are resting on the rough horizontal surface as shown in the figure. A block of mass m hangs from P. If the system is in equilibrium, find the magnitude and the direction of frictional force at A and B.

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The correct Answer is:

`f = (M + m ) "g"(cot theta)/(2)`

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