Faster Than Gravity Ball Drop

This experiment uses two boards hinged together at one end and supported apart by a dowel rod. A ball is placed at the very end of the upper board in a holder and the dowel support is quickly removed. The end of the board falls faster than gravity because a point close to center of mass of the board falls at the rate of gravity while points close to the hinge fall at rates less thangravity. The ball separates from the board because the board is falling faster thangravity and the ball can only fall at the rate of gravity, as a result the ball is "caught" inthe green cup when originally it was located at the end of the board on a rubberstopper holder.

Pira DCS # 1Q20.50

2 Boards   Wood Dowel   Cup
Rubber Stopper   Ball