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MomentsThe turning effect of a force is called the MOMENT which can be increased by:
Equation: Moment (Newton metres, Nm)= force (Newtons, N) x perpendicular distance from pivot (Metre, m) Example: Levers reduce the force needed to perform tasks such as lifting a heavy object.
Less force is needed to open a door by pushing at the side furthest from the hinge than at the side closest to the hinge as there is greater momentum. Balancing momentsIf an object is not turning around a pivot, the total clockwise moment is balanced by the total anti-clockwise moment. sum of the clockwise moments = sum of the anti-clockwise moments Example using a see-saw:
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