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

Question

A particle moving with velocity v is acted by three forces shown by the vector triangle PQR. The velocity of the particle will: (A) remain constant (B) change according to the smallest force QR (C) increase (D) decrease

Tardigrade Admin · Accepted Answer

As forces are forming closed loop in same order SO, vecFnet = 0 ⇒ m (d vecV/dt) = 0 ⇒ vecv = constant

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

remain constant

change according to the smallest force $QR$

increase

decrease

As forces are forming closed loop in same order
SO, $F_{n e t} = 0$
$\Rightarrow m \frac{d V}{d t} = 0$
$\Rightarrow v$ = constant

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