force - a push, pull or twist, aerofoil, friction - force that opposes motion, weight - gravitational force on an object, neutral equilibrium - the position of the center of gravity of an object remains unchanged, center of gravity - the point through which the weight of the object passes, gravity - centripetal force on planets, moons and artificial satellites in orbit, moment of a force - force (N) × perpendicular distance from the pivot (m)., law of moments - when an object is in equilibrium, the sum of the clockwise moments equals the sum of the anticlockwise moments., centripetal force - force acting on an object travelling in a circular path,

Forces

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