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A block of mass l O kg is kept at the to...

A block of mass l O kg is kept at the top of a rough inclined plane ofi_nclination 60° with the horizontal. The length of the inclined plane is 5 m and the coefficient of sliding friction between the block and the surface is 0.3. What is the work done on the block against the force of friction , when it reaches the bottom? (g`=10m//s^2`)

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