Question

in a lever fulcrum is at one end at a distance of 40 cm from the load and effort is at the other end at a distance 80 cm from the load . Find the load arm
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Answer 1

Explanation:

,

(a) Load arm = 30 cm

(b) Effort arm = (90 + 30) cm = 120 cm

(c) Mechanical advantage = Effort arm/Load arm

= 120 cm/30 cm = 4