An Initially Installed Flywheel Can Store 10⁶ J of Kinetic

question 4

Multiple Choice

An initially installed flywheel can store 10⁶ J of kinetic energy when rotating at 300 rad/s. It is replaced by another flywheel of the same size but made of a stronger material. If its mass is the same as that of the original, and it is now capable of achieving a rotational speed of 600 rad/s, what maximum energy can be stored?

• A) 40 *10⁵ J
• B) 20 * 10⁵ J
• C) 10 * 10⁵ J
• D) 5.0 * 10⁵ J

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