A particle moving with velocity $\vec{v}$ is acted by three forces shown by the vector triangle $P Q

Question

A particle moving with velocity $\vec{v}$ is acted by three forces shown by the vector triangle $P Q R$. The velocity of the particle will\

Professor PC Thomas Classes · Answer

(d) : As per triangle law, $\vec{F}_{1}+\vec{F}_{2}+\vec{F}_{3}=0$ i.e., net force on the particle is zero. So, acceleration is also zero.\ Hence velocity of the particle will remain constant.\