1.

Theminimum force F with which A will be pushed suchthat B will not slip down is29, coefficient of friction between A and B is μ.A BTITTTTTTITITTTTTTTTTTT77711FrictionlessMgmg(M+m)g(M-m)g

Answer»

frictional force acting upward on B = μN

and for Value of N ,

acceleration of system = F/(M+m)

so, force equation on B => N = m*a = Fm/(M+m)

now, that Frictional force should balance the mg of block B

so, μN = mg=> μFm/(M+m) = mg=> F = g(M+m)/μ

option 3


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