A particle of mass M rests on a rough in...

A particle of mass M rests on a rough inclined plane at an angle q to the horizontal`("sin" theta = (4)/(5))`. It is connected to another mass m as shown in fig. The pulley and string are light. The largest value of m for which equilibrium is possible is M. Find the smallest value of m for which equilibrium is possible

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3M/5

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