A block is kept on an inclined plane of inclination $\theta$ of length l. The velocity of particle at the bottom of inclined is (the coefficient of friction is $\mu$)
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(b) Acceleration $(a) $ $ = g(\sin \theta - \mu \;\cos \theta )$ and $s = l$
$v = \sqrt {2as} $$ = \sqrt {2gl(\sin \theta - \mu \cos \theta )} $
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