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J1-29. Van De Graaff - Pendulum

Purpose

To demonstrate electrostatic force.

Equipment

Van de Graaff generator, pendulum assembly.◙

Images

J1-29

Description

A pendulum isolated by a wooden vertical support is placed on top of a Van de Graaff. The pendulum bob becomes charged, experiences a repulsive force from the dome, and moves about erratically. Try other lengths to get different motion.