Simple Machines

Front

What does a simple machine do?

Back

A simple machine allows users to apply less force over a longer distance, reduce the amount of force needed to do work, and change the direction of the applied force.

Front

Name a type of simple machine that consists of a circular object that turns around a center point.

Back

Wheel and Axle

Front

What is a simple machine that consists of a rigid bar that pivots about a fixed point?

Back

Lever

Front

What is the fixed point on a lever called?

Back

Fulcrum

Front

What type of simple machine is used to split or cut objects?

Back

Wedge

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to help raise or lower objects.

Front

What is the purpose of a pulley?

Back

To change the direction of the force applied to lift an object.

Front

What is mechanical advantage in the context of simple machines?

Back

The ratio of the output force produced by a machine to the input force applied.

Front

How does a lever work?

Back

A lever amplifies an input force to lift or move a load by using a fulcrum.

Front

What is the difference between a first-class lever and a second-class lever?

Back

In a first-class lever, the fulcrum is between the input force and the load; in a second-class lever, the load is between the fulcrum and the input force.