Northwestern Physics Demos                                 Go back to MECHANICS
DCS# 1L10.30NWU# M-50Location:    3 B 6
title: Gravitational Torsion Balance
aka: Cavendish Balance

Actual lab equipment, but the experiment takes more than a lecture period to complete, so this is a demonstration of how it can be done.  Shine a laser on the mirror to show the optical level action.

    Would this work on the moon? (ie. with lower gravity?)
    What does the time period of oscillation depend on?
pix of set up