A Rotating Flywheel Can Be Used as a Method to Store

question 18

Multiple Choice

A rotating flywheel can be used as a method to store energy.If it has 2.00 × 10⁶ J of kinetic energy when rotating at 400 rad/s,and if a frictional torque of 4.00 N
M acts on the system,in what interval of time would the flywheel come to rest?

• A)2 500 min
• B)41.7 min
• C)25.0 min
• D)167 min

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