Flywheel

Flywheel#

A flywheel is a wheel with a high moment of inertia that spins to store kinetic energy. It has applications in cars, gyroscopes, and electrical power systems.

A flywheel of mass $p a r a m s . m k g$ , and radius of gyration $p a r a m s . R c m$ is spinning at $p a r a m s . R P M R P M$ .

Part 1#

How much kinetic energy is stored in the wheel?

Answer Section#

Please enter in a numeric value in kJ.

Part 2#

If the coefficient of rolling friction of the bearing is $p a r a m s . C r r$ , for how long will the flywheel spin? This friction occurs at an inner radius of $p a r a m s . r c m$ . Note that the rolling resistance force is analogous to the force of friction, where $F_f r i c t i o n = μ_r F_{N}$ .

Answer Section#

Please enter in a numeric value in hours.

Attribution#

Problem is licensed under the CC-BY-NC-SA 4.0 license.
The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.

Flywheel

Contents

Flywheel#

Part 1#

Answer Section#

Part 2#

Answer Section#

Attribution#