Topics 1.8 and 1.9 - Centre of Mass and Moments 0.0 / 5 ? PhysicsForces and MotionCentre of MassMomentsIGCSEAQA Created by: Alice CullenCreated on: 25-12-16 11:59 What is the centre of mass? The centre of mass is the point at which the mass of an object is thought to be concentrated 1 of 9 If freely suspended, what will happen to an object? If freely suspended, an object will come to rest with it's centre of mass directly below it's point of suspension 2 of 9 Where is the centre of mass in a symmetrical object? Along it's axis of symmetry 3 of 9 What is the relationship between time period and frequency? Time Period = 1 ÷ Frequency 4 of 9 What alters the time period of a pendulum? The time period of a pendulum depends on it's length 5 of 9 What is a moment? The turning effect of a force 6 of 9 What happens if an object isn't turning? If an object is not turning, the total clockwise moment must be exactly balanced by the total anticlockwise moment about any pivot 7 of 9 What can be used as a force multiplier? Simple levers 8 of 9 What happens if there is a resultant moment? If the line of action of the weight of an object lies outside the object's base there will be a resultant moment and the body will topple 9 of 9
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