Question

Mechanical advantage of a first order lever is :

• A. >1
• B. $\ge 1$
• C. < 1
• D. $\le 1$

Answer 1

The correct option is B $\ge 1$

$\text{Solution}$:

1. The mechanical advantage of a first class lever depends upon the placement of the fulcrum.

2. If the fulcrum is closer to the load than to the input force, the lever has a MA > 1.

3. If the fulcrum is exactly in the middle of the load and the input force, the MA = 1.

$\text{hence B is the correct option}$