Experiment Mo-01

Loaded Beam

Description: A 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.


Counter-clockwise torques are provided by masses painted black, while clockwise torques are provided by masses painted white. The torques are equal, so the beam is balanced.




Materials: bar, pivot stand, masses, spring balance


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This page was last updated on Friday August 15, 2008 8:37 PM