Mechanical advantage:
Class-I lever . . . can be any positive number
Class-II lever . . . always less than ' 1 ' (and more than zero)
Class-III lever . . . always more than ' 1 '
Divide the Effort Distance (ED) by the Load Distance (LD) and this will give you the Mechanical Advantage (MA). MA=ED/LD
It's the same as for any other lever. MA = distance of load from fulcrum/distance of effort from fulcrum. The answer will be less than one.
Move the focal point of the leaver.
The Class Lever for Pliers is a class 2 lever.
It is a third class lever.
A crane is a first class lever when it is winching in or out the rope attached to a load. The crane becomes 3rd class lever when it's boom is luffing, i.e. it is being lowererd or raised.
Class 1.
The distance from the fulcrum to the effort.
The distance from the fulcrum to the effort.
1.25
Here we don't always depend on the number but only the convenience of handling mechanically. First class. Fulcrum in the middle (scissors) Second class : Load is in the middle (nut cracker) Third class: Power is in the middle (forceps)
second class lever
The mechanical advantage of a First Class lever is Distance of the effort from the fulcrum/Distance of the load from the fulcrum
A second class lever always has a mechanical advantage greater than 1.
Second class lever. . . . Always greater than 1 . Third class lever . . . . . Always less than 1 . First class lever . . . . . Can be greater than 1 or less than 1 depending on position of fulcrum.
The mechanical advantage of a lever is the ratio of the length of the lever on the applied force side of the fulcrum to the length of the lever on the resistance force side of the fulcrum. There are three types of levers - class 1, class 2, and class 3.
because they are smaller than the level 3 that's why
fd=MA
Multiply (the input force) x (the lever's mechanical advantage).