-----------------------------------------WELCOME TO ANNA'S PAGE :----------------------------------------------------
---------------------------------------------"ALL ABOUT LEVERS"------------------------------------------------------------
Q: What is a lever?
A: a lever is a rigid bar that is supported at one point. This point is called the fulcrum.
Q: How many classes of levers are there?
A: three, which are classified by the input and output force, as well as the location of the fulcrum.
Q: What are levers used for?
A: A lever is a simple machine used to gain force, gain speed or change direction.
Q: What is the benefit obtained by using a lever called? A: It is called a mechanical advantage.
Fulcrum (F) : the pivot point
Effort/ Input (E) : the force a person uses when they use the lever.
Load/ Output (L) : the force needed to move the object without a lever.
How do LEVERS work?
Some levers reduce the force needed to move weight. To do this they must increase the distance through which the force will be acting. Example: A 1-kilogram force acting on a distance of 5 meters can move a 5-kilogram weight 1 meter.
In other levers, speed is increased by applying the force on a shorter distance than the resistance or load is moved.This requires an equivalent increase of force. Example: When someone swings a bat, the end of the bat moves faster than the hands but you need more force to swing the bat, than to move the hands alone.
To learn about the first-class leverClick Here----------------------------------------------------------->
To learn about the second-class leverClick Here------------------------------------------------------>
To learn about the third-class leverClick Here ----------------------------------------------------------->
-----------------------------------------WELCOME TO ANNA'S PAGE :----------------------------------------------------
---------------------------------------------"ALL ABOUT LEVERS"------------------------------------------------------------
Q: What is a lever?
A: a lever is a rigid bar that is supported at one point. This point is called the fulcrum.
Q: How many classes of levers are there?
A: three, which are classified by the input and output force, as well as the location of the fulcrum.
Q: What are levers used for?
A: A lever is a simple machine used to gain force, gain speed or change direction.
Q: What is the benefit obtained by using a lever called?A: It is called a mechanical advantage.
Fulcrum (F) : the pivot point
Effort/ Input (E) : the force a person uses when they use the lever.
Load/ Output (L) : the force needed to move the object without a lever.
How do LEVERS work?
Some levers reduce the force needed to move weight. To do this they must increase the distance through which the force will be acting.
Example: A 1-kilogram force acting on a distance of 5 meters can move a 5-kilogram weight 1 meter.
In other levers, speed is increased by applying the force on a shorter distance than the resistance or load is moved.This requires an equivalent increase of force.
Example: When someone swings a bat, the end of the bat moves faster than the hands but you need more force to swing the bat, than to move the hands alone.
To learn about the second-class lever Click Here ------------------------------------------------------>
To learn about the third-class lever Click Here ----------------------------------------------------------->
To learn about human levers Click Here
To see the bibliography Click Here