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# How do you make simple machines?

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Many simple machines don't have to be made. Instead they are objects that are used in everyday life. Items like wheelbarrows, rolling pins and baseball bats are all examples of items that can be used as simple machines.

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There are several types of simple machines. One example is the level ? a simple machine that consists of a rigid object and a fulcrum or pivot. When a force is applied to one end of the object, it pivots about the fulcrum, which magnifies the force at another point along the object. There are three types of levers, and they vary based on the relation of the input force, output force and fulcrum. Examples of a lever include swinging a baseball bat, a seesaw, a wheelbarrow and a crowbar.

A wheel-and-axle simple machine is a circular device that is attached to a rigid bar in its center. When a force is applied to the wheel, it causes the axle to rotate. Using a rolling pin or any object that rolls around a bar, such as a wheel on the axle of a car, counts as creating a wheel-and-axle machine.

Sometimes, simple machines can be combined to create a much larger one, such as a bicycle.

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## Related Questions

• A:

Simple machines allow people to make tradeoffs that reduce the amount of work necessary to perform a task. Simple machines may convert one type of force to another, change the direction of an applied force or trade distance travelled for force applied.

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• A:

The seven simple machines are the inclined plane, wedge, screw, lever, pulley, gear and wheel and axis. The simple machines are non-powered mechanical devices that change the direction or magnitude of a force. Each of these machines is considered to be a simple machine. However, when combined, they are considered a complex machine.

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• A:

The six types of simple machines are the pulley, the lever, the wedge, the wheel and axle, the inclined plane and the screw. Simple machines are designed to make work easier.