Timed free fall: Ball drops 2 meters through electronic timing gate.

1C30.10 • A+0+5

diagram for demo

With the Digital Timer on, power is delivered to the electromagnet, holding the steel ball. 1.) If the 'start' button is pushed, the ball is dropped and the #2 photogate measures the time it takes for the ball to fall to gate #2. (Gate #1 is not used.) 2.) If the black 'magnet off' button is pushed, Photogate #1 is activated when the ball passes gate #1. Photogate #2 measures the time it takes for the ball to go between photogates #1 and #2. If h = 1 meter t = .452 sec. If h = 2 meter t = .639 sec.

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