Engineering Simple machines

What is a simple machine? Device with few pieces Allows mechanical energy to be used more efficiently Reduce the force and time needed to perform a task This Photo by Unknown Author is licensed under CC BY-NC-ND

Example of a simple machine

1.0 Inclined plan A flat surface that is set at an angle to a horizontal surface It spreads the force needed to raise or lower a load over a larger distance.

1.1 Inclined planes

1.2 Wedges

1.3 Screws

2.0 Lever It is a simple machine composed of a rigid piece that can pivot around a fulcrum.

2.1 First class lever

2.2 Second class lever

2.3 Third class lever

3.0 Wheel and axle Uses the difference between the wheel and the axle to reduce the force needed or increase the distance an object can travel.

3.1 Wheels

Made up of a wheel with a groove along the edge. 3.2 Pulleys Made up of a wheel with a groove along the edge.