Question

A machine requires an effort of $15kgf$ for a load of $40kgf$. Find its mechanical advantage.

• A. $2.7$
• B. $2.07$
• C. $0.7$
• D. $1.7$

Answer 1

The correct option is A

$2.7$

Given: Load = $40kgf$ and effort = $15kgf$.

We know, Mechanical advantage, $MA=\frac{Load}{Effort}$

$\therefore MA=\frac{40}{15}=2.7$

Since, MA is a ratio of two same quantities, it does not have a unit. It is just a constant for the given system.