- Introduction
- Force
- Effects of Force
- Types of Forces
- Friction
- Advantages of friction
- Disadvantages of friction
- Work
- Energy
- Types of simple machines
1. Lever
2. Pulley
3. Inclined plane
4. Wheel and axle
5. Wedge
6. Screw
SCREW
• A screw is an inclined plane coiled into a spiral form.
Example: