(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A square plate is tilted on one of its corners as shown below. If the corner does not slip, and the plate is allowed to fall, determine the velocity of the moving corner before it hits the ground. The moving corner is point P, which is 45 degrees above the horizontal.

Mass=1.8kg

Length of each side=.1m

Angle_{center of mass}=80 degrees

Angle_{point P}=45 degrees

2. Relevant equations

Mg(Y_{final}-&_{initial})=.5M omega^{2}

3. The attempt at a solution

I don't understand how to find delta Y in order to find potential energy. The center of mass is .071 m.

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# Energy in Rotational Motion

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