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A block of mass m attached with a massle...

A block of mass `m` attached with a massless spring of force constant k The block is placed over a rough inclined surface for which the coefficient of friction is `0.5` the system is released from rest when the spring was unstretched The minimum mass of the hanging block to move the small block "m" up the plane is (neglect mass of spring and pulley and friction in pulley)

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The correct Answer is:
`[[mg(sintheta+mu_(s)costheta)]^(2)/(2k)]`
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