Question

A crowbar of length 120 cm has its vulcrum situated at a distance of 20 cm from the load, calculate the mechanical advantage of the crowbar?
(ans - 5)

Answer 1

Answer:

5

Explanation:

We have,

• Length of crowbar = 120 cm
• Load arm = 20 cm

To find,

• Mechanical advantage

Solution,

>> Effort arm = Length of crowbar - Load arm

=> Effort arm = (120 - 20)cm

=> Effort arm = 100 cm

______________________________

>> Mechanical advantage = Effort arm/Load arm

=> Mechanical advantage = (100/20)cm

=> Mechanical advantage = 5