Question

5. In a lever, fulcrum is at one end at a distance of
30 cm from the load and effort is at the other end
at a distance of 90 cm from the load. Find :
(a) the length of load arm,
​

Answer 1

Answer:

4

Explanation:

(a) Load arm = 30 cm

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

= 120 cm

(c) Mechanical advantage = Effort arm

Load arm

= 120 / 30

= 4 cm