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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