Instructions
Read the information below about levers, then complete the exercises that follow.
A lever is a simple machine that helps us lift heavy objects with less effort. It consists of a long bar that can move around a fixed point called a fulcrum. By using a lever, you can move a heavier load by applying a smaller force at a greater distance from the fulcrum.
There are three classes of levers:
- Class 1 Lever: The fulcrum is located between the effort and load. Example: A seesaw.
- Class 2 Lever: The load is between the fulcrum and the effort. Example: A wheelbarrow.
- Class 3 Lever: The effort is between the fulcrum and the load. Example: A fishing rod.
Questions
1. What are the three parts of a lever?
2. Which class of lever is a seesaw? Describe it briefly.
3. Can you name a real-life example of a Class 2 lever? Explain how it works.
4. Why do you think levers are important? Write your answer in a few sentences.
Activity
Draw a simple diagram of a Class 1 lever, labeling the load, effort, and fulcrum. Use a pencil or colored pens to make it fun!