body falling in a vacuum

Velocity & Acceleration

A Behr free fall apparatus is seen in the video. The bob is suspendedat the top of the apparatus by an electromagnet. When the current in the magnet is cut off, the bob falls to the ground. A spark timer triggering every sixtieth of a second leaves atrail of spots on the paper tape behind the bob. In this way, the distance vs. time data during the fall are obtained.

BobDrop


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