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A block of mass m(1) rests on a rough ho...

A block of mass `m_(1)` rests on a rough horizontal plane with which its coefficient of friction is `mu`. A light string attached to this block passes over a light frictionless pulley and carries another block of mass `m_(2)` as shown in figure-2.213. When the system is just about to move, find the value of `mu` in terms of `m_(1) m_(2)` and `alpha`. Also find the tension in the string.

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The correct Answer is:
`[(m_(2)cosalpha)/(m_(1)-m_(2)sinalpha)]`
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