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10 cards from this deck
The turning effect that a force has
Moment=Force×Distance\text{Moment} = \text{Force} \times \text{Distance}Moment=Force×Distance
Perpendicular distance from pivot to line of action
Has no turning effect
Clockwise positive, anticlockwise negative
Sum of clockwise moments = sum of anticlockwise moments
At the centre of the rod
Eliminates unknown forces at that point
Sum of upward forces = sum of downward forces
Causes no turning effect
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