Wednesday
May 22, 2013

# Homework Help: Physics

Posted by Kimora on Monday, December 15, 2008 at 10:41pm.

Ok

why would it be necessary for someone to measure oscillations from a 20 cm mark of a suspended ruler as oppose to the center of mass?

• Physics - Damon, Tuesday, December 16, 2008 at 3:44am

If you suspended it from the middle, the period would be infinite because the rule would balance and their would be no torque to pull it back into a vertical position when displaced. They just hung the ruler from the 20 cm mark to make it more fun than hanging from the end. It makes it harder to compute the moment of inertia.

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