Home You will be learning about Levers, how levers work, the classes of levers, the various sections of a lever, and calculating the Ideal Mechanical Advantage of a Lever.
Overview Definition: A Lever is one of the six simple machines (the other five being, a wheel and an axle, a pulley, inclined plane [ramp], wedge, and screw). A lever is a solid bar that gets supported at one single point/position.This point is called a Fulcrum.
Levers are used to transport something heavy without using as much work, or force that you would use without this simple machine. Although, there will be a greater distance needed to lift an object with a lever.
There are three types/classes of levers. Class One, Class Two, Class Three. They each have a fulcrum, an input force and an output force and are classified by the position of the fulcrum, the Effort Arm (Input Force) and the Load arm (Output Force).
Levers can be found not only in machines, but in your body. For example: when you pick an object up, your elbow acts as the Fulcrumand your arm bone would be the lever. Levers are not only used in modern days, but also in ancient times. When the Ancient Egyptians built the Pyramids, they used big levers to transport the heavy limestone and granite blocks.
Fulcrum A Fulcrum is the support or point on a lever. It is where the lever pivots. The class of levers is dependent on the position of the fulcrum. (click here for information on Classes of Levers)
Effort Arm (Input Force) & Load Arm (Output Force) The Effort Arm on a lever is the section of the lever that is being acted on by the Input Force. For example, when two kids are on a see-saw, the child pushing on the see-saw is the Input Force, and that child is on the Effort Arm. The effect of that force, or the child that goes up, is what you would call the Output Force, which occurs on the Load Arm.
Home
You will be learning about Levers, how levers work, the classes of levers, the various sections of a lever, and calculating the Ideal Mechanical Advantage of a Lever.
Overview
Definition: A Lever is one of the six simple machines (the other five being, a wheel and an axle, a pulley, inclined plane [ramp], wedge, and screw). A lever is a solid bar that gets supported at one single point/position.This point is called a Fulcrum.
Levers are used to tran
There are three types/classes of levers. Class One, Class Two, Class Three. They each have a fulcrum, an input force and an output force and are classified by the position of the fulcrum, the Effort Arm (Input Force) and the Load arm (Output Force).
Levers can be found not only in machines, but in your body. For example: when you pick an object up, your elbow acts as the Fulcrum and your arm bone would be the lever. Levers are not only used in modern days, but also
in ancient times. When the Ancient Egyptians built the Pyramids, they used big levers to transport the heavy limestone and granite blocks.
Fulcrum
A Fulcrum is the support or point on a lever. It is where the lever pivots. The class of levers is dependent on the position
of the fulcrum. (click here for information on Classes of Levers)
Effort Arm (Input Force) & Load Arm (Output Force)
The Effort Arm on a lever is the section of the lever that is being acted on by the Input Force. For example, when two kids are on a see-saw, the child pushing on the see-saw is the Input Force, and that child is on the Effort Arm. The effect of that force, or the child that goes up, is what you would call the Output Force, which occurs on the Load Arm.