Question 167: Motion in 2D & Vectors

Question

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

Accepted Answer

From the given diagram, the forces are forming
closed loop in same order.
$$ 	herefore $$ F
net
= $$\overrightarrow 0 $$
$$ \Rightarrow $$ $$m{{dv} \over {dt}}$$ = $$\overrightarrow 0 $$
$$ \Rightarrow $$ $$\overrightarrow v $$ = constant.

Answer

remain constant

Answer

increase

Answer

decrease

Answer

change according to the smallest force $$\overrightarrow {QR} $$

Motion in 2D & Vectors

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

Choose the correct answer: