Question

What is a lever? Draw a lever of class-two type.

Answer 1

1. A lever is a simple machine that consists of a rigid bar free to rotate about a fixed point called a “fulcrum”.
2. Force applied to a lever to do work is called “effort”
3. The object that is lifted, moved, or cut by the lever is called “load”.
4. In the case of a class-two lever, the load is placed between the effort and the fulcrum.
5. Nutcracker and wheelbarrow are the two common examples of a class-two lever.
6. Below is a diagram of a class-two lever.