Question

The mechanical advantage of an Inclined plane of height $h$ and length $l$ is :

• A. greater than $1$
• B. equal to 1
• C. less than 1
• D. 0

Answer 1

The correct option is A greater than $1$

Mechanical Advantage of an inclined plane $=\frac{\text{length}}{\text{vertical height}}$
$\text{M.A.}=\frac{l}{h}$
Because $l$ is the length of the inclination and it is always the greater than the vertical height $h$

so M. A. of an inclined plane is always greater than 1