A Flywheel with a Moment of Inertia 6

question 43

Essay

A flywheel with a moment of inertia 6.00 × 10⁶ kg∙m² is spinning with an angular speed of 120 rev/s about a vertical axis while it sits at the north pole. The disk is turning counterclockwise when viewed from above. The disk is brought to a rest. Treat the earth as a uniform sphere with a mass 5.976 × 10²⁴ kg and a radius 6.374 × 10⁶ m.
(a) What will be the magnitude of the change in angular momentum of the earth?
(b) What will be the change in length of a day on Earth?

Learn about the significance of developing subordinates and providing constructive feedback.

Explain why there are divergent taxonomies of leadership behavior.

Understand how clarifying and supporting behaviors contribute to effective leadership.

Understand the difference between lifetime annuities and pension plans and the concept of adverse selection.

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Definitions:

Tension Headaches

A common type of headache characterized by a feeling of tightness around the forehead or back of the neck.

Biofeedback

A technique that teaches individuals to improve their health by using signals from their own bodies, often involving the control of physiological functions such as heart rate, muscle tension, and blood pressure.

Relaxation

A state of being free from tension and anxiety, which can be achieved through various techniques such as meditation or deep-breathing exercises.

Negative Reinforcement

A process in behavioral psychology where the removal or avoidance of an unpleasant stimulus strengthens a behavior or makes it more likely to occur.