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Moments and equilibrium of rigid bodies

Mechanics · Lesson 4 of 6

Lesson 4 of 6

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Lesson 4 of 6 · Mechanics

Moments and equilibrium of rigid bodies

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By the end you’ll be able to

calculate the moment of a force about a point, with correct magnitude and sense, using perpendicular distance from the point to the line of action
use the principle of moments for a body in equilibrium, including the condition that the sum of clockwise moments equals the sum of anticlockwise moments
apply the equilibrium conditions for a rigid body in a plane, combining zero resultant force with zero resultant moment

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determine unknown reactions at supports and contacts from force and moment equations

interpret and justify the choice of pivot or moment point to simplify a solution

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