Moments and Hooke's Law 4.5 / 5 based on 2 ratings ? PhysicsForces and MotionIGCSEEdexcel Created by: joydadaCreated on: 12-04-17 11:57 What is a moment? The turning effect of a force 1 of 12 What is the equation linking moment, force and distance? Moment = Force x Perpendicular Distance from Pivot 2 of 12 How do you increase the moment? Increasing the distance or the force 3 of 12 How do you achieve the maximum turning effect? Pushing at right angles (perpendicular) to the pivot 4 of 12 What is a Centre of Gravity? Centre of gravity if the point which all the weight of the body acts through 5 of 12 How do you find the centre of gravity of a freely suspended object? It will swing until its centre of gravity is vertically below the point of suspension 6 of 12 What is the principle of moments? Total anticlockwise moments = total clockwise moments 7 of 12 What occurs if anti clockwise moments and clockwise moments aren't equal? There will be a resultant force in a certain direction causing the object to turn 8 of 12 What is Hooke's Law? The extension of a spring is proportional to the force acting on it 9 of 12 What types of materials obey Hooke's Law? Elastic materials 10 of 12 At which point does Hooke's Law not apply? The elastic limit 11 of 12 What defines elastic behaviour? When stretched to less than its elastic limit it will return back to its original shape 12 of 12
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