Forces

Dr George Dransfield explains types of non-contact force: magnetic, electrostatic and gravitational.

James Stewart explains contact force: tension, normal contact force, friction and air resistance.

James Stewart explains the law of conservation of momentum and how to calculate momentum.

Dr George Dransfield explains the effect of forces on the extension of a spring.

A video explaining how objects with mass in a gravitational field experience a force known as weight

Professor Brian Cox explores the feeling of weightlessness that is caused by freefall.

This video shows how levers and gears make use of turning forces to provide an advantage.

Jon Chase explains Newton’s Third Law.

The relationship between force and acceleration with Dr Maggie Aderin-Pocock and Dr Alex Lathbridge.