Force
Forces and Motion
| Electricity and Magnetism
Two groups of forces
Physics Narrative
for 11-14
Contact and non-contact forces
The main types of forces that you will meet can be divided into contact and non-contact forces.
Non-contact forces – allow remote parts of the environment to affect an object:
- Gravity force
- Magnetic force
- Electric force
The space throughout which non-contact forces act is referred to as a field
. The field specifies the strength and direction of the non-contact force acting.
Reminder about contact forces
Contact forces – the environment can provide support:
- Compression force (a warp force)
- Tension force (a warp force)
- Buoyancy
Contact forces – reduce, or prevent motion through an environment:
- Grip
- Slip
- Drag
