Levers Simple Machines

Front

What is a lever?

Back

A simple machine made of a beam and fulcrum.

Front

What do levers do to work?

Back

Levers make work easier.

Front

What is mechanical advantage?

Back

The ratio of the load (output) to the effort (input) in a lever.

Front

What is the formula for mechanical advantage?

Back

Mechanical Advantage = Load (Output) / Effort (Input).

Front

What is a first class lever?

Back

A lever where the fulcrum is between the load and the effort.

Front

What is a second class lever?

Back

A lever where the load is between the fulcrum and the effort.

Front

What is a third class lever?

Back

A lever where the effort is between the fulcrum and the load.

Front

Give an example of a first class lever.

Back

A seesaw.

Front

Give an example of a second class lever.

Back

A wheelbarrow.

Front

Give an example of a third class lever.

Back

A fishing rod.