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A gymnast on the uneven parallel bars is at rest, tipped at a 45 degree angle...

A gymnast on the uneven parallel bars is at rest, tipped at a 45 degree angle from the vertical. The distance from her hands to her feet is 1.8 m. If we model her body as having a uniform cross section and assume that her center of gravity is midway between her hands and her feet, what is her initial angular acceleration?

Weight of Gymnast is unkown, this is the complete problem given to me in the book.

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