As shown , a small body of mass `50 g` placed over a larger mass `1950 g` whosw surface is horizontal near the smaller mass and gradually curves to become vertical. The smaller mass is pushed on the longer one at a speed `20 m//s` and the system is left to itself. All surfaces are smooth. Find the speed of the larger block when the smaller block is moving on the vertical part.

Explanation

When the smaller block is moving on the vertical part , the `(m + M)` system will move with velocity `v_(0)` in horizontal direction.
Since no external force in horizontal direction , hence by the momentum conservation
`mv = (m + M)v_(0)`
`v_(0) = (mv)/(m + M) = ( 50 xx 20)/((50 + 1950)) = (1)/(2) m//s`