Q:

What are some examples of compound machines?

A:

Some examples of compound machines include scissors, wheelbarrows, lawn mowers and bicycles. Compound machines are just simple machines that work together.

Scissors are compound machines because they contain both a wedge and a lever. Bikes contain pulleys, screws, levers, wheels, axles and inclined planes.

A simple machine is a device or mechanism that changes force. Levers are simple machines that output force from a pivoting point. There are three kinds of levers used in simple and compound machines. They are hammer-type, wheelbarrow type and arm.

Pulleys are another simple machine used to make compound machines. Pulleys work by changing force due to the rotation of a pulley wheel. The wheel and axle is also a simple machine that is simply a pulley attached to a shaft. A car steering wheel and a Ferris wheel are good examples of wheel and axles.

Inclined planes redirect and redistribute horizontal force into vertical force and a wedge is two inclined planes which are back to back. Screws are used in compound machines and are merely inclined planes wrapped around a small cylinder. All of these simple machines can go into making compound machines. Some compound machines only use two while others use a variety of simple machines.

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