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[solved] Human Rotational Energy. A dancer is spinning at 72 rpm about an axis through her center with her arms outstretched, as shown in the following figure....


Human Rotational Energy. A dancer is spinning at 72 rpm about an axis through her center with her arms outstretched, as shown in the following figure. From biomedical measurements, the typical distribution of mass in a human body is as follows: Head: 7.0% Arms: 13%(for both) Trunk and legs: 80.0% Suppose the mass of the dancer is 63.5 kg , the diameter of her head is 16 cm, the width of her body is 24 cm, and the length of her arms is 60 cm

Part A?

Calculate moment of inertia about dancer spin axis. Use the figures in the following table to model reasonable approximations for the pertinent parts of your body.?

Part B?

Calculate your rotational kinetic energy.?

Express your answer to two significant figures and include the appropriate units.

Express your answer to two significant figures and include the appropriate units.

 


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