Turning Forces For AQA Physics Unit 3 4.5 / 5 based on 3 ratings ? PhysicsForces and MotionGCSEAll boards Created by: KathCreated on: 25-05-12 13:09 What is a moment? The turning effect of the force 1 of 19 How can it be increased? Increase the force and the distance 2 of 19 So Moment=force X perpendicular distance? True 3 of 19 What is it measured in? Nm- Newton Metres 4 of 19 What is centre of mass? Where the mass is thought to be concentrated 5 of 19 According to the principle of moments, for an object in equilibrium... the sum of all clockwise moments about any point.. is equal to the sum of the anticlockwise moments about that point 6 of 19 Something will topple if the line of action its weight falls outside the base? True 7 of 19 Stability is increased by..? Widening the base 8 of 19 For an object moving in a circle at constant speed the objects velocity is directed along a tangent to the circle 9 of 19 The object accelerates... towards the centre of the circle 10 of 19 This is called the centripetal force? True 11 of 19 What makes this force bigger? increase the mass and speed of the object 12 of 19 What else increases this force? decrease the radius of the circle 13 of 19 What makes the force of gravity larger? increase the mass and decrease the distance 14 of 19 What shape is a planets orbit? Eliptical 15 of 19 How long is the period of a monitoring satellite? 2-3 hrs 16 of 19 Communications satellites orbit around the poles? False 17 of 19 Communications satellites orbit around the equator? True 18 of 19 What type of orbit does a communications satellite have? geostationary 19 of 19
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