Simple Machines

Front

What is a simple machine?

Back

A simple machine is a device that makes work easier by allowing us to push or pull in a more efficient way. Examples include levers, pulleys, and inclined planes.

Front

What is a lever?

Back

A lever is a simple machine made up of a bar that pivots on a fixed point called a fulcrum. It helps lift or move loads with less effort.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a wheel on an axle or shaft. It is used to change the direction of a force, making it easier to lift heavy objects.

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What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift heavy objects. It reduces the amount of force needed to lift the object.

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What is a wedge?

Back

A wedge is a simple machine that is used to split or cut objects apart. It has a thick end and a thin edge, allowing it to apply force to an object.

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What is a screw?

Back

A screw is a simple machine that consists of a spiral inclined plane wrapped around a cylinder. It converts rotational motion into linear motion.

Front

How does a wheel and axle work?

Back

A wheel and axle is a simple machine that consists of a larger wheel attached to a smaller axle. When the wheel turns, it helps move or lift objects more easily.

Front

What is mechanical advantage?

Back

Mechanical advantage is the ratio of the output force produced by a machine to the input force applied. It shows how much a machine can multiply force.

Front

What is the purpose of simple machines?

Back

The purpose of simple machines is to make work easier by reducing the amount of force needed to perform tasks.

Front

What is the relationship between the distance between threads on a screw and the effort needed to turn it?

Back

The less distance between the threads on a screw, the easier it is to turn, requiring less effort.