Topic 6 0.0 / 5 ? PhysicsForces in equilibriumASAQA Created by: Jemma1494Created on: 04-06-21 16:12 Centre of mass The point on an object at which the force of its mass has no turning effect 1 of 9 Moment A force taken from a point Moment = force x distance 2 of 9 Rules for equilibrium Clockwise and anticlockwise moments must be equal Resultant force = 0N If there are 3 forces they must form a closed triangle 3 of 9 Principal of moments Clockwise and counterclockwise moments must be equal for an object to be in equilibrium 4 of 9 Vector Vector = magnitude and direction 5 of 9 Scalar Scalar = magnitude 6 of 9 How to solve multiple forces Take all forces from a point to find moments 7 of 9 Stable equilibrium An object in stable equilibrium can be displaced and return to original position 8 of 9 Resultant force The sum of two forces acting in the same direction or opposite directions If forces are acting in different directions but not opposite then use parallelogram of forces to resolve 9 of 9
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