A Disk Starts from Rest and Rotates About a Fixed

question 37

Multiple Choice

A disk starts from rest and rotates about a fixed axis, subject to a constant net torque.The work done by the torque during the second revolution is ______ as the work done during the first revolution.

• A)the same
• B)twice as much
• C)half as much
• D)four times as much
• E)one fourth as much

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Definitions:

Period

A length or portion of time, often defined for specific calculations or measurements.

Ratio

A quantitative relationship between two numbers showing how many times one value contains or is contained within the other.

Express

To show, manifest, or reveal something through words, gestures, actions, or artistic expression.

Proportion

A portion, fraction, or quantity assessed in relation to its total entity.