FM1 - Mass, weight and gravity Flashcards Preview

IGCSE - Physics > FM1 - Mass, weight and gravity > Flashcards

Flashcards in FM1 - Mass, weight and gravity Deck (11):
1

What is gravity?

The force of attraction between all masses

2

What three things does gravity affect?

- It makes all objects accelerate towards the ground on the surface of the planet
- It gives everything weight
- It keeps planets, moons and satellites in their orbit

3

What is the orbit?

The balance between the forward motion of the object and the force of gravity pulling it inwards

4

What is mass?

The amount of "stuff" in an object

5

What is weight?

The pull of gravity on every object (towards the centre of the earth)

6

Will an object have the same mass and weight on the earth and moon?

It will have the same mass on the earth and moon but different weight

7

Why will 1.6N on the Moon weight less than it does on Earth which is 10N?

The forces of gravity pulling on the moon are less

8

What is weight measured in?

Newtons (N)

9

What is mass measured in?

Kilograms (kg)

10

What links weight, mass and gravity together?

The equation:

Weight = mass x gravitational field strength
W = m x g

11

What is the value of 'g' on earth and the moon?

Earth - 10 N/kg

Moon - 1.6 N/kg