Turning Forces Flashcards
1
Q
Pivot
A
The pint in which a lever or seesaw balances
2
Q
Moment
A
A measure of the ability of a force to rotate an object about a pivot
3
Q
Newton metres
A
A unit of moment
4
Q
Law of moments
A
An object is at equilibrium if the clockwise moments are equal to the anti-clockwise moment
5
Q
Centre of gravity
A
The point in an object where the force gravity seems to act
6
Q
Centre of mass
A
The point in an object where the mass of an object seems to act
7
Q
Moments are known as
A
The turning effect of a force
8
Q
Moments depend on
A
- the force applied
- how far it is from the pivot
9
Q
Formula for calculating moments
A
Moment= force x perpendicular distance from the pivot
10
Q
Centre of gravity rules
A
- if the centre of gravity is above the pivot, then there is no turning force
- if it is to the left or right of the pivot there will be a turning force
