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Moments
A moment is the ____________________ effect of a force around a fixed point called a ____________________ . For example , this could be a door opening around a fixed ____________________ or a ____________________ turning around a fixed nut .

The size of a moment depends on ____________________ factors :

the size of the ____________________ applied

the ____________________ distance from the pivot to the line of action of the ____________________

This explains why ____________________ force is needed to open a door by pushing at the side ____________________ from the hinge than at the side ____________________ to the hinge . To push at the hinge side of the door requires ____________________ force to be exerted because the distance is ____________________ .

A ____________________ can be calculated using this equation :

M = ____________________ × ____________________

where :

M = the moment of the force in newton - metres , ____________________

F = the force in newtons , ____________________

d = the perpendicular distance from the line of action of the force to the pivot in ____________________ , m