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.

Know More

## Keep Learning

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.

Sources:

## Related Questions

• A:

Examples of six simple machines include windmills, slides, chisels, drills, blinds and seesaws. A windmill is a wheel and axle, slides are inclined planes, a chisel is a wedge, a drill is a screw, blinds are pulleys and a seesaw is a lever. Simple machines allow humans and animals to do work more easily by lessening the amount of force needed to move objects.

Filed Under:
• A:

A compound machine is made by combining two or more simple machines. Scissors is a compound machine because it's a combination of a wedge and a lever, which are both simple machines. The cutting edge of scissors is a wedge and the cutting force comes from a lever.

Filed Under:
• A:

A compound pulley, sometimes referred to as a block-and-tackle system, is a mechanical arrangement of pulleys that permits a trade-off of applied force for distance, according to HowStuffWorks. By slinging rope over and through a system of wheels, a compound pulley permits weights to be lifted and pulled with the application of relatively little force, saving energy and reducing the power needed to accomplish work.