Turning Forces

Question 1

Pivot

Answer 1

The pint in which a lever or seesaw balances

Question 2

Moment

Answer 2

A measure of the ability of a force to rotate an object about a pivot

Question 3

Newton metres

Answer 3

A unit of moment

Question 4

Law of moments

Answer 4

An object is at equilibrium if the clockwise moments are equal to the anti-clockwise moment

Question 5

Centre of gravity

Answer 5

The point in an object where the force gravity seems to act

Question 6

Centre of mass

Answer 6

The point in an object where the mass of an object seems to act

Question 7

Moments are known as

Answer 7

The turning effect of a force

Question 8

Moments depend on

Answer 8

• the force applied

- how far it is from the pivot

Question 9

Formula for calculating moments

Answer 9

Moment= force x perpendicular distance from the pivot

Question 10

Centre of gravity rules

Answer 10

• 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