Physics - Moments

Moments explained...

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Forces can be used to turn objects about a pivot...turning effect of force = moment

- a spanner used to unscrew a nut would exert a moment on the nut (example of turning effect)

To increase the moment:

  • increase size of force
  • increase perpendicular distance between the force and the pivot (use a longer instrument

Moment (newton meters, Nm) = force (newtons, N) x perpendicular distance from pivot (meters, m)


Someone pushing down on crowbar

  • push = force applied by person = effort, when trying to lift objects (the load) around a pivot.
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great notes!

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