forces in equilibrium 3.0 / 5 based on 2 ratings ? PhysicsForcesASAQA Created by: rayanne vitaliCreated on: 30-10-12 22:29 what is a vector? any physical quantity that has a direction as well as magnitude 1 of 14 what is a scalar ? any physical quantity that is not directional 2 of 14 what is displacement? distance in any given direction 3 of 14 what is velocity? is speed in a given direction 4 of 14 on a slope what 3 main forces are acting for it to stay in equilibrium ? friction , support force and weight 5 of 14 on a slope how do you find the friction force ? w sin feta 6 of 14 on a slope how do you find a support force ? w cos feta 7 of 14 what is the formula for the moment of a force ? moment = force x distance 8 of 14 what is the principle of moments? the sum of clockwise movements = sum of anticlockwise movements 9 of 14 what is the centre of mass ? the mass of a body that the point through which a single force on the body has no turning affect 10 of 14 what does uniform mean ? the centre of mass is directly in the centre of the shape or object 11 of 14 what is meant by a couple ? a pair of equal and opposite forces acting on a body 12 of 14 whats the difference between stable and unstable equilibrium ? in stable equilibrium if body is displaced then released it will return to equilibrium position, if unstable it wont 13 of 14 what is the equation for tilting to occur ? Force x distance > weight x base / 2 14 of 14
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