A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N calculate its mechanical advantage?
- 0.7
- 0.9
-
1.5
- 2.5
- 10.0
The correct answer is: C
Explanation
Mechanical Advantage = \(\frac{Load}{Effort}\) but Load = 30N and Effort = 20N
M . A = \(\frac{30}{20}\) = 1.5