Question

3. A crowbar of length 100 cm is used to lift a load of 50 N. The fulcrum is at a distance of 20 cm
from the load. Calculate a the mechanical advantage of the crowbar b. the effort applied at the
other end.​

Answer 1

Answer:

M.A is given by (Effort arm/ Load arm)

so, MA= (100-20/20)= 4

Hence MA is also given by (Load/Effort)

Effort= 50/4= 12.5N