A particle moving with velocity V is acted by three forces shown … - Vidyadip

MCQ

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

A
increase
B
decrease
✓
remain constant
D
change according to the smallest force $\overrightarrow {Q R}$

✓

Answer

Correct option: C.

remain constant

c
$\overrightarrow {\mathrm{F}}_{\mathrm{rest}}=\overrightarrow {\mathrm{F}_{1}}+\overrightarrow {\mathrm{F}_{2}}+\overrightarrow {\mathrm{F}_{3}}=\overrightarrow {0}$

$\Rightarrow \overrightarrow {a}=0$

$\overrightarrow v=$ constant

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