Types of Levers

Front

What are the three classes of levers?

Back

1st class, 2nd class, 3rd class.

Front

What is a 1st class lever?

Back

A lever where the fulcrum is between the effort and the load (e.g., seesaw).

Front

What is a 2nd class lever?

Back

A lever where the load is between the fulcrum and the effort (e.g., wheelbarrow).

Front

What is a 3rd class lever?

Back

A lever where the effort is between the fulcrum and the load (e.g., tweezers).

Front

What is the definition of a fulcrum?

Back

The fixed point where the lever arm pivots or moves.

Front

What is the definition of load in the context of levers?

Back

The weight lifted or the resistance.

Front

What is the definition of effort in the context of levers?

Back

The force applied to move the load.

Front

Give an example of a 1st class lever.

Back

Seesaw or scissors.

Front

Give an example of a 2nd class lever.

Back

Wheelbarrow or nutcracker.

Front

Give an example of a 3rd class lever.

Back

Tweezers or a fishing rod.