Question

Which of the following will be the correct examples of the first, second and third class levers?

| The first class lever| The second class lever| The third class lever
---|---|---|---
1.| Scissor S| Wheelbarrow| Broom
2.| Ice tongs| Tweeze r| paper cutter
3.| Plier S| Nut cracker| Fishing rod

A. 1 and 2 only
B. 2 and 3 only
C. 3 and 1 only
D. 1, 2 and 3

Answer 1

In the case of an ice tong and a tweezer, the effort will be placed between the fulcrum and the load. In the case of scissors and pliers, then the fulcrum will be placed in between the effort and load. In the case of wheel barrow, paper cutter and a nutcracker, the load will be between the effort and fulcrum. This will be helpful in answering this question.

Complete answer:
In the case of an ice tong and a tweezer, the effort will be placed between the fulcrum and the load. Therefore they will be considered as class 3 levers. In the case of scissors and pliers, then the fulcrum will be placed in between the effort and load. Therefore they are known as class 1 levers.
In the case of wheel barrow, paper cutter and a nutcracker, the load will be between the effort and fulcrum. Hence, they are known as class 2 levers. A broom and fishing rod have the effort between fulcrum and load. Hence they are known as class 3 levers. Therefore in the mentioned table, 1 and 3 are the correct examples of first, second and third class levers.

Therefore the correct answer has been mentioned as option C.

Note:
A class 1 lever will be having the fulcrum placed between the effort and load. A class 2 lever is having the load between the effort and fulcrum. A class 3 lever is having the effort between the fulcrum and the load.