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10 Cards in this Set
- Front
- Back
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Moment of a force |
The turning effect of a force |
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Activities include |
Closing or opening a door Steering a car Turning off a water tap Riding a see saw Tightening a nut using a spanner Opening a soda bottle |
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Si unit of moment is |
Nm |
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Formula |
Force×perpendicular distance from line of action of the force |
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The moment of a force is increased by? |
Increasing the perpendicular distance from the line of action of the force...thus easier to loosen or tighten a nut using a spanner with a long handle |
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The principle of moments states that?? |
For a system in equilibrium..the sum of clockwise moments about a point is equal to the sum of anticlockwise moments about the same point |
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The weight of a suspended material acts on? |
The midpoint if the object is balanced horizontally |
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The weight of an object... |
Acts at its midpoint |
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For a system of parallel forces in equilibrium |
The sum of forces in either direction is equal |
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The sum of vertically upward forces is equal to the vertically downward forces |
Sum of clockwise moments =sum of anticlockwise moments |
