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Angular Momentum and Angular Impulse

AP Physics 1· difficulty 1/5

A flywheel of moment of inertia 2.0 kg⋅m22.0~\text{kg·m}^2 spins at 15 rad/s15~\text{rad/s}. What is its angular momentum?

  • A

    300 kg⋅m2/s300~\text{kg·m}^2\text{/s}

  • B

    7.5 kg⋅m2/s7.5~\text{kg·m}^2\text{/s}

  • C

    30 kg⋅m2/s30~\text{kg·m}^2\text{/s}

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  • D

    17 kg⋅m2/s17~\text{kg·m}^2\text{/s}

Explanation

L=Iω=(2.0)(15)=30 kg⋅m2/sL = I\omega = (2.0)(15) = 30~\text{kg·m}^2\text{/s}.

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