A ball of mass 'm' is pushed with a velocity u towards a movable wedge of mass 3m which is at rest. Height of the wedge is 60m. Assume all surfaces to be smooth. The minimum value of 'u' for which the block will reach the top of the wedge is ( There is no loss of energy when the ball tries to rise on the wedge ) ( take g = 10 m//s^(2) )

A ball of mass 'm' is pushed with a velocity u towards a movable wedge

1.	A ball of mass 'm' is pushed with a velocity u towards a movable wedge of mass 3m which is at rest. Height of the wedge is 60m. Assume all surfaces to be smooth. The minimum value of 'u' for which the block will reach the top of the wedge is ( There is no loss of energy when the ball tries to rise on the wedge ) ( take g = 10 m//s^(2) )
Answer» `40 m//`SEC `80 m//`sec `20M //`sec `50M//`sec Answer :A

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