A block is placed at the bottom of an inclined plane and projected upwards with some initial speed. It slides up the incline, stops after time t 1 , and slides back in a further time t 2 . The angle of inclination of the plane with the horizontal is θ and the coefficient of friction is µ.
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(b, c, d)
During upward motion retardation, g (sin θ + μ cos θ )
During downward motion acceleration
g (sin θ – μ cos θ )
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