A disc of mass `10 g` is kept floating horizontally by throwing `10"marbles"//"second"`
Channel: Doubtnut
Date: 2020-08-16

A disc of mass `10 g` is kept floating horizontally by throwing `10"marbles"//"second"` against it from below.If the mass of each marble is `5 g` , the velocity with which marbles are striking the disc (the marbles strike the disc normally and rebound downward with the same speed)