Question

If the moment of force acting on the pivot is $900\text{dyne-m}$, calculate the force applied.

• A. 600

Answer 1

The correct option is A 600
Given:
The moment of force, $\tau =900\text{dyne-m}$
Length of the bar, $\text{l}=1.5\text{m}$
Force acting on the bar $=\text{F}$
$\tau =\text{F}\times \text{l}$
$900=\text{F}\times 1.5$

$⟹\text{F}=\frac{900\text{dyne-m}}{1.5\text{m}}=600\text{dyne}$