Lever
Lever: Overview
This Topic covers sub-topics such as Lever, First Class Lever, Second Class Lever, Third Class Lever, Principle of Moments, Mechanical Advantage of a Lever, Load in a Lever, Effort in a Lever and, Fulcrum in a Lever
Important Questions on Lever
What is the position of the effort in a third-class lever?
In a second-class lever, the load is located between the fulcrum and the effort.
What is a second-class lever? Give any two examples of the second class lever.
In a first-class lever the fulcrum is located between the effort and load.
An external force applied to a simple machine to overcome the load is effort.
The point at which lever is supported is called a fulcrum.
Mention the types of levers with the position of loads in a simple machine.
A force applied to a machine to do mechanical work is called _____.
Name the fixed point around which a rigid bar rotates.
Arjun wants to lift the rock as shown in the figure. At which point should he apply the force so that he could lift the rock easily?
The positions of effort, fulcrum and weight in a pair of tongs are
Give one word for the following.
The stiff bar moves freely about a fixed point.
