Question

The value of MA in third class lever is always less than 1 , why ?

Answer 1

Mechanical advantage of a class 3 lever is always less than 1 because the load arm is always longer than effort arm. This helps by reducing the applied force(effort). So, it is a speed multiplier.

Answer 2

Answer:

The value of MA in third class lever is always less than one because the load arm is greater than the effort arm. As we know that when the load arm is greater than the effort arm, the mechanical advantage will always be lesser than one, which results in gain in speed. Example: knife, tongs, etc.