Second Class Lever Mechanical Advantage

Question: Write on Second Class Lever Mechanical Advantage

Answer:

In the class 2 lever, the load is present between the fulcrum and effort. That means the fulcrum is at one end of the lever, and effort is applied at the other end of it.

As a result, the effort arm is much longer than the load arm in all class II levers.

Mechanical advantage MA = effort arm/load arm.

As effort arm>load arm in class 2 levers, hence MA is always greater than 1 in class 2 levers.

[ Note: effort arm = distance between fulcrum and effort,
and load arm = distance between load and fulcrum]

This also means that in second class lever applying smaller effort, we can surpass a much bigger load.

See also  work, energy, machine - definitions
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