Which one of the following is an example of Second Class Lever?

The correct answer is option "2"

Concept:

Lever:

A lever is a simple machine made up of a rigid rod arranged in such a manner that it can move freely around a fixed part.

It consists of the following three parts.

Fulcrum:

This is the fixed point around which the rod moves.

Load:

It is the object or weight on which work is to be performed.

Effort:

It is the force that needs to be applied to the rod in order to perform a task.

Based on the position of these three parts, the lever can be classified into three types.

• First-class lever
• Second-class lever
• Third-class lever

Explanation:

First-class lever:

• The lever in which the fulcrum is located in between the load and the effort is called a first-class or class one lever.
• Examples: a pair of scissors, a see-saw, and a crowbar.

Second-class lever:

• A Lever in which the load is located between the fulcrum and the effort is called a second-class or class two lever.
• Examples: a wheelbarrow, a bottle opener, and a nutcracker.

Third-class lever:

• It is a Lever in which the effort is located in between the fulcrum and the load is called third-class or class three levers.
• Examples: a pair of tongs, and a fishing rod.
• Hence Fishing rod is the correct answer.