Find out about the lever, one of the most basic forms of a machine, which helps lift heavy objects with much less effort, through this fun and animated learning module. Also learn about a variety of levers from this very same module.
The lever is one of the most basic forms of a machine. Levers help us lift loads with lesser effort. Even though this looks simple there are many things going on in order to lift the object easily.
A lever can be described as a long rigid body with a fulcrum along its length.
The object you’re lifting.
Point at which the lever pivots.
The force applied to make the object move.
We use levers in so many of our day to day activities.
Types of Lever :-
They are classified into three categories depending on the relative position of the load, fulcrum and force.
The 1st Class Lever –
where, the pivot is in between the effort and the load. E.g. Seesaw
The 2nd Class Lever –
where, the load is between the fulcrum and the effort. E.g. Wheelbarrow
The 3rd Class Lever –
where, the effort is between the fulcrum and the load. E.g Fishing rod
Look for objects around the house that use this principle. Hint- you use one on your hands and feet regularly.
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