Types of levers and the importance of each of them
People use levers but they do not know the type of them and how to determine the type of any lever, The levers are classified according to the location of the effort force, the resistance force & the fulcrum.
The types of levers
The First-class levers: In our daily life, The first-class levers are considered the most popular type of levers.
In first-class levers, the fulcrum is between the effort force and the resistance.
Examples of first-class levers: The pincer, the pliers, the paddle, the scissors, the seesaw, the crowbar, the hammer claw, the suction, the pump, the nail clipper and the balance.
The hammer claw and the scissors are from the first-class levers
Each of the scissors, the pincer, the pliers and the nail clipper are composed of two first-class levers.
The Second class levers: In the second class levers, the resistance force is between the effort force and the fulcrum.
Examples of the second class levers: The bottle opener, the stapler, the wheelbarrow and the Nutcracker.
The bottle opener and the nutcracker are from the second class levers
The Third class levers: In the third class levers, the effort force is between the resistance force and the fulcrum.
Examples of third-class levers: The Hockey bat, The manual broom, the tweezers, the fishing tool (the fishing hook), the ice or the sweet holder, and the cool tongs (the cool holder).
Manual broom, Tweezers, cool tongs and fishing hock are from the third-class levers
The Nutcracker is composed of two levers of the second class levers and the tweezers are composed of two levers of the third class levers.
Do you know that you can determine the type of any lever in our daily life?
First, Imagine and think of the way of the lever work.
Then, You should determine the position of the effort force, the resistance force and the fulcrum.
You should identify the midpoint of the lever.
Finally, If the midpoint of the lever is the fulcrum, So, It is from the first-class levers.
If the midpoint of the lever is the resistance force, So, It is from the second-class levers.
If the midpoint of the lever is the effort force, So, It is from the third-class levers.
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