Torque

AP Physics 1· difficulty 2/5

F r = lever length pivot

A force is applied at angle θ\theta from the lever as shown. The torque about the pivot is

  • A

    FsinθF\sin\theta

  • B

    rFr F

  • C

    rFcosθr F \cos\theta

  • D

    rFsinθr F \sin\theta

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Explanation

Only the <strong>perpendicular</strong> component of FF contributes: τ=rFsinθ\tau = r\,F\sin\theta.

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