Human Rotational Energy. A dancer is spinning at 72 rpm...

Human Rotational Energy. A dancer is spinning at 72 rpm about an axis through her center with her arms outstretched ($\textbf{Fig. P9.83}$). 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 you are this dancer. Using this information plus length measurements on your own body, calculate (a) your moment of inertia about your spin axis and (b) your rotational kinetic energy. Use Table 9.2 to model reasonable approximations for the pertinent parts of your body. Figure P9.83 (CANT COPY FIGURE)

Human Rotational Energy. A dancer is spinning at 72 rpm about an axis through her center with her arms outstretched ($\textbf{Fig. P9.83}$). 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 you are this dancer. Using this information plus length measurements on your own body,
calculate (a) your moment of inertia about your spin axis and (b) your rotational kinetic energy. Use Table 9.2 to model reasonable approximations for the pertinent parts of your body.
Figure P9.83 (CANT COPY FIGURE)

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Transcript

Please give Ace some feedback