How many types of levers in science

Answer 1

There are three types of levers in science:

1. First-class lever: The fulcrum is located between the input force and the output force. Examples include a seesaw or a pair of scissors.

2. Second-class lever: The output force is located between the input force and the fulcrum. Examples include a wheelbarrow or a nutcracker.

3. Third-class lever: The input force is located between the fulcrum and the output force. Examples include a broom or a fishing rod.