Part B · Moments, levers and gears Forces and their effects mind map

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Part B · Moments, levers and gears Forces and their effects mind map

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Moments / balance

Turning effect: Moment = F × perpendicular distance; N m
Equilibrium: Clockwise = anticlockwise; static rest also needs zero resultant
Lever arm: Longer perpendicular arm → more moment; through pivot → zero

Mechanical advantage

Lever: Output nearer pivot → greater force / shorter travel; energy conserved
Meshing gears: Opposite rotation; larger driven gear: slower / greater torque
Teeth ratio: 20 driving 40 → half speed; friction reduces ideal transfer

Connections

Moments / balance → Mechanical advantage: Perpendicular lever arms connect torque balance to mechanical advantage.
Mechanical advantage → Moments / balance: Greater output force or torque trades against distance or rotation speed.