# Physics AQA Unit 3

Key ideas for AQA Physics P3 section 1. Good luck.

• Created by: Emma l
• Created on: 09-06-09 14:21
What is the shortest distance between the line of action of the force and the pivot also known as?
Moment
1 of 11
The size of the moment is given by which equation?
M=F*D
2 of 11
What do you have to mark the position of to find the centre of mass of a suspended object?
Plumbline
3 of 11
What can be done to increase the stability of an object?
Increase the weight at the bottom of the object
4 of 11
What else can be done to increase the stability of an object?
Have a wider base
5 of 11
What provides the centripetal force for planets and satellites?
Gravitational force
6 of 11
How can the force of gravity be increased?
Increase the mass of the object and decrease the distance
7 of 11
If the distance between two objects is doubled the force becomes what of the original force?
1/4
8 of 11
Satellites further away do what?
Orbit slower
9 of 11
How long does a geostationary satellite take to complete one orbit?
24 hours
10 of 11
Communication Satellites
11 of 11

## Other cards in this set

### Card 2

#### Front

The size of the moment is given by which equation?

M=F*D

### Card 3

#### Front

What do you have to mark the position of to find the centre of mass of a suspended object?

### Card 4

#### Front

What can be done to increase the stability of an object?

### Card 5

#### Front

What else can be done to increase the stability of an object?