Question

A particle moving with velocity $barV$ is acted by three forces shown by the vector triangle PQR. The velocity of the particle will :

• A. Increase
• B. Decrease
• C. Remain constant
• D. Change according to the smallest force

Answer 1

Answer: (C)

Remain constant

As forces are forming closed loop in same order
So, ${\overrightarrow{F}}_{net}=0$
$\Rightarrow m\frac{d\overrightarrow{v}}{dt}=0$
$\Rightarrow \overrightarrow{v}$ = constant