What is a lever? How many types of levers are there?
Answers
Answer:
On the basis of the location of fulcrum, load, and effort in the lever body, levers are of 3 types. These types of levers are First Class lever or class I lever, Second Class lever or class II lever, and Third Class lever or class III lever.
Explanation:
What is the first class lever or class I lever?
The lever which has a Fulcrum or pivot point in between the Load and Effort is called first class lever.
Seesaw is an example of first class lever where the pivot(fulcrum) is in the middle
What is the second class lever or class II lever?
The lever which has a Load in between the Fulcrum(pivot) and Effort is called second class lever
An example of second class lever is nutcracker where the nut (load here) is in the middle.
What is the third class lever or class III lever?
The lever which has Effort in between the Fulcrum(pivot) and Load is called third class lever
Examples of third class lever include tweezers where effort is applied in the middle..
Hope it is helpfull
Definitation in short- A lever is a rod which can turn about a fixed point called the fulcrum.
Explantation- A lever consists of three parts(mainly)-fulcrum, load arm, effort arm. The fulcrum is the middle part on which the entire lever rests on. The load is the object on which effort is needed to be applied. The effort is the work input that we give.
Types-There are mostly three types of lever- class 1, class 2, and class 3 lever.
Class 1-The levers in which the fulcrum is in between the load and the effort are called levers of class I.Examples: Crowbar, a pair of pliers, common balance, handle of a hand pump, the oar rowing a boat etc.
Class 2- The levers in which the load is in between the fulcrum and the effort are called levers of class II.Examples: Nutcracker, lemon squeezer, mango cutter etc.
Class 3-The levers in which the effort is in between the fulcrum and the load are called levers of class III.Examples: Forceps, a pair of tongs, knife, spade for lifting soil or coal etc.
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