Chapter 5 - Turning Effect of Forces

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4 Terms

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Moment

Causes rotation about a pivot; Formula: Moment = Force × Perpendicular distance from pivot; Example: Opening a door, using a spanner, seesaw balance

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Equilibrium

Resultant force and moment on the body = 0

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Center of Gravity

Imaginary point where the entire weight of the object seems to act; Lower centre of gravity → more stable body

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Principal of moment

Sum of clockwise moments about a pivot = sum of anticlockwise moments