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A spring, placed horizontally on a rough...

A spring, placed horizontally on a rough surface is compressed by a block of mass m, placed on the same surface so as to store maximum energy in the spring. If the coefficient of friction between the block and the surface is `mu`, the potential energy stored in the spring is

Text Solution

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For equilibrium of the block
`F_("max")-mu mg=0`
`rArr F= mu mg`
`:.U=(F^(2))/(2k)=(mu m^(2)g^(2))/(2k)`
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