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Class II Levers
Class III Levers - Machine and Levers
2670    Arnab De    23/11/2018

In these types of levers, the fulcrum F and the Load (L) are at the two ends of levers and the effort (E) is somewhere in between the fulcrum F and the load(L) as shown in figure. The effort and load are work in the opposite directions and the effort arm is always smaller than the load arm. Therefore form the equation M.A < 1 and since for an ideal lever M.A. is equal to V.R

In fig, BF is a class III lever in this lever F is the fulcrum and L is the load at the point B. the effort E act on the point A. here BF is the load arm and AF is the effort arm. Here, BF>AF.

E × AF =  L × BF

Mechanical advantage = (L/E)=(AF/BF)

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The mechanical advantage and velocity ratio of class II levers are always less than 1.

Example Of Class III lever

Class III levers
Examples of Class III levers
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Class II Levers
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Author Details
Arnab De
I have over 16 years of experience working as an IT professional, ranging from teaching at my own institute to being a computer faculty at different leading institute across Kolkata. I also work as a web developer and designer, having worked for renowned companies and brand. Through tutorialathome, I wish to share my years of knowledge with the readers.
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