U1.3 Principles Of Moments Flashcards
1
Q
What is the centre of gravity
A
The point at which we can take all an objects weight to act
2
Q
What is the centre of mass
A
The point at which we take an objects mass to be constrained
3
Q
What does it mean if an object is uniform
A
Its thickness and composition do not change along its length
So its centre of gravity will be at its geometric centre
4
Q
What is a moment of a force
A
The product of the force and the perpendicular distance from the point to the line of action of the force
5
Q
What is the principles of moments
A
When an object is in rotational equilibrium, the sum of the clockwise moments about any point is equal to the sum of the anticlockwise moment around the same point
