A lever is a simple machine that is made up of a board or bar that rests on an object. Levers are used to achieve a mechanical advantage, such as making lifting heavy objects easier. More »

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A wedge, a lever, and a wheel and axle are types of simple machines, but a block and tackle is a complex machine because it is a combination of simple machines. A block and tackle is made from a rope or cable threaded be... More »

A seesaw is a simple machine that falls into the lever category. A lever is a long bar or stick that one pushes or pulls against a fulcrum to move something. More »

A staircase is an example of the inclined plane simple machine. A spiral staircase, however, is categorized as a screw. Another common example of an incline plane is a ramp. More »

A simple machine is a manual device that reduces the effort needed to perform a certain amount of work. These mechanisms alter the direction or magnitude of a force to help increase the ability to lift, push and pull obj... More »

A gear is a special type of lever, and is therefore considered a simple machine. The reason a gear is like a lever is due to the teeth in the gear. Each tooth exerts pressure on another, causing the gear to move. More »

The force applied to a simple machine is called effort force. The amount of work a simple machine can do is based on effort force multiplied by the distance a machine moves or lifts an object. More »

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