simple horizontal bar pivoted on knife edges can be used to check equality of
clockwise and counterclockwise moments. Masses are hung on both sides of the bar.
If the bar balances, the moments are equal. Alternatively, a spring balance affixed
to the lab bench may be used to measure the force necessary at any point on the
bar to balance the system.
torques are provided by masses painted black, while clockwise torques are provided
by masses painted white. The torques are equal, so the beam
This page was last updated on
Friday August 15, 2008 8:37 PM