Class practical: Gravitational force can act at a distance ; it shows little variation over short distances, but does vary...

Practical Activity 14-16

This activity provides a memorable experience relating to the gravitational pull of the Earth and establishes that objects...

Classroom Activity 11-14

This activity is to remind pupils that to escape the Earth's gravitational field a force is needed. Establish that the bigger...

Classroom Activity 11-14

The aims are to establish the strength of the gravitational field at the Earth's surface and to appreciate that the strength...

Classroom Activity 11-14

This activity provides direct evidence that objects of very different masses fall at the same rate, regardless of how heavy...

Classroom Activity 11-14

The aim is to provide a framework to discuss the two effects that mass has on acceleration when something falls.

Classroom Activity 11-14

Here pupils check their understanding of the connections between the central ideas in this topic.

Classroom Activity 11-14

When was the last time you watched a young child playing that favourite game of throwing the toy out of the pram? You know...

Physics Narrative 11-14

It is truly mind-bending that the gravitational force acts between any two objects with mass in the universe.

Physics Narrative 11-14

Physicists use the idea of a field when dealing with forces, such as gravity, that act at a distance with no contact between...

Physics Narrative 11-14

Newton's great achievement was to identify gravity as a force pulling objects (such as the infamous apple) to the ground and...

Physics Narrative 11-14

Suppose you want to calculate the size of the gravitational force acting between you and your colleague as you approach each...

Physics Narrative 11-14