P: Hooke's Law and Moments 3.0 / 5 based on 1 rating ? PhysicsForces and MotionIGCSEEdexcel Created by: HettieCreated on: 08-06-13 09:22 What is the equation for a moment? moment (Nm, Ncm) = force (N) × distance (m, cm) 1 of 8 What is equilibrium? When the sum off all anticlockwise moments = sum of all clockwise moments 2 of 8 What is the centre of gravity of an object? The point at which the entire weight of an object acts. 3 of 8 What is Hooke's Law? The extension of a material is directly proportional to the force applied to the material, until the limit. 4 of 8 What does it mean if something's elastically stretched? If unloaded, it will return to zero: it will go back to its original size. 5 of 8 What is it when something has been stretched too far to go back to its original size? It has been permanently stretched. 6 of 8 What is accuracy? Close to the true value: in the centre of the bullseye. 7 of 8 What is precision? How close in agreement the measured values from repeated measurements are. 8 of 8
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