First, Second, and Third class levers

Front

What is a first class lever?

Back

A first class lever is a type of lever where the fulcrum is located between the effort and the load. Example: Scissors.

Front

What is a second class lever?

Back

A second class lever is a type of lever where the load is located between the fulcrum and the effort. Example: Wheelbarrow.

Front

What is a third class lever?

Back

A third class lever is a type of lever where the effort is applied between the fulcrum and the load. Example: Fly swatter.

Front

Identify an example of a first class lever.

Back

Scissors or a teeter-totter.

Front

Identify an example of a second class lever.

Back

Wheelbarrow or a foot.

Front

Identify an example of a third class lever.

Back

Fly swatter or tweezers.

Front

What is the purpose of a lever?

Back

A lever is used to lift or move loads with less effort.

Front

What is the fulcrum in a lever?

Back

The fulcrum is the pivot point around which the lever rotates.

Front

How does a first class lever work?

Back

In a first class lever, the effort and load are on opposite sides of the fulcrum, allowing for balance and movement.

Front

How does a second class lever work?

Back

In a second class lever, the load is between the fulcrum and the effort, making it easier to lift heavy objects.