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.