Question

The length of the arm of a nutcracker is $15cm$. A force of $22.5kgwt$ is required to cut a nut without cracker. Where should the nut be placed on the cracker in order to cut it by a force of $2.25kg/wt$?

• A. $1cm$ from fulcrum
• B. $1.5cm$ from fulcrum
• C. $0.5cm$ from fulcrum
• D. $2.0cm$ from fulcrum

Answer 1

Answer: (B)

$1.5cm$ from fulcrum

We take moments about the fulcrum
$2.25\times 15=22.5\times x$
or
$x=\frac{33.75}{22.5}$
or
$x=1.5cm$