Tuesday, 11 December 2012
A simple machine is a device for altering a force.
Simple Machines: lever, bar, pulley, inclined plane, screw, wheel, axle and wedge.
1. Lever:: A lever moves on a fulcrum
2. Wheel: A wheel spins around an axle.
3. Pulley: A pulley is a wheel with a rope.
4. Inclined plane: