Torque

AP Physics 1· difficulty 2/5

A B C

A door is hinged at the left edge. A constant force (same magnitude and direction) is applied perpendicular to the door at three possible points (A, B, C). At which point does the force produce the <strong>largest</strong> torque about the hinge?

  • A

    C

    check_circle
  • B

    B

  • C

    A

  • D

    All three produce the same torque.

Explanation

Torque τ=rFsinθ\tau = rF\sin\theta with the same FF and θ=90\theta = 90^\circ; larger lever arm rr gives larger torque. C is furthest from the hinge.

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