Correct Answer - Option 2 : 0.83
Mechanical advantage: It is a form of calculation that measures the amplified force taken by the mechanical system.
- It gives the ratio between the force applied to the load and the force needed to overcome the given force.
- It is a unitless expression since the two ratio quantities are the force.
- Mechanical advantage is also defined as the force created by the machine to the for applied on it.
The formula of mechanical advantage is given as:
MA = Load/Force = L/F
Given, that F = 60 N, L = kg
Also, Force is given by,
Force = Load + Friction
F = L + f
f = F - L = 60 - 50 = 10
MA = 50/60 = 0.83
So, the correct option is 0.83.