Physics

10th

grade

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Moment of Force and Torque of a Couple

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10 questions

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  • 1. Multiple Choice
    45 seconds
    1 pt
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    Four forces namely gravitational force, normal force, frictional force, and driving force act on a wheel. The direction of the frictional force and driving force are as shown in the figure.


    Which force that exerts a turning effect about the axle?

    Gravitational force

    Normal force

    Frictional force

    Driving force

  • 2. Multiple Choice
    1 minute
    1 pt
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    The frictional force acting on the wheel is 24 N and the diameter of the wheel is 80 cm.


    What is the moment caused by the frictional force on the wheel?

    9.6 Nm, clockwise

    9.6 Nm, anti-clockwise

    19.2 Nm, clockwise

    19.2 Nm, anti-clockwise

  • 3. Multiple Choice
    1 minute
    1 pt
    Image

    Charlie and his dad are sitting on a seesaw as shown in the figure.


    Given Charlie's weight is 300 N and he sits 2.0 m away from the fixed point, what is the moment of force generated by Charlie?

    150 Nm, clockwise

    150 Nm, anti-clockwise

    300 Nm, clockwise

    600 Nm, anti-clockwise

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