Question

What is the mechanical advantage of a hockey stick that is gripped at point D and hits the puck at point A?

Answer 1

Mechanical advantage = Effort distance/Resistance distance

Effort distance = D - Fulcrum = 0.5 m
Resistance distance = A - Fulcrum = 2.0 m

Then,
Mechanical advantage = 0.5/2 = 0.25 

Hockey stick is an example of third class where mechanical advantage is less than one as the speed of the end of point A is critical.

Answer 2

Mechanical advantage is 0.5/2 = 0.25