Question

write a short note on three class of levers with a labelled diagram for each also give atleast two examples of each lever​

Answer 1

Answer:

There are three types of levers: first class, second class and third class. The difference between the three classes depends on where the force is, where the fulcrum is and where the load is.

The human arm is a class 3 lever: the elbow is the fulcrum, the muscles in the forearm are the effort, and what is held in the hand is the load. Tweezers are an example of two class 3 levers working together.

How does a class 3 lever work?

A class 3 lever has the effort between the fulcrum and the load. Because the load and effort are on the same side, they move in the same direction. In a class 3 lever, the effort is always closer to the fulcrum than the load, so class 3 levers are used to make the load move faster.