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Block A of mass m is placed on a smooth surface and block B of mass km `(klt1)` is projected towards other end of block A. If work done against friction is n times the initial kinetic energy of block B, the graph between k and n is

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B

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Text Solution

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`W_(f)=Delta K.E.=(1)/((1+k))[(1)/(2)kmU^(2)]`
`n=(1)/(1+k)`
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