If $\vec{P}+\vec{Q}=\vec{P}-\vec{Q}$, then
$\vec{P}=\overrightarrow{0}$
$\vec{Q}=\overrightarrow{0}$
$|\vec{P}|=1$
$|\vec{Q}|=1$
Two forces with equal magnitudes $F$ act on a body and the magnitude of the resultant force is $F/3$. The angle between the two forces is
Which of the following forces cannot be a resultant of $5\, N$ and $7\, N$ force...........$N$
The resultant force of $5 \,N$ and $10 \,N$ can not be ........ $N$
$ABC$ is an equilateral triangle. Length of each side is $a$ and centroid is point $O$. Find $\overrightarrow{A B}+\overrightarrow{A C}=n \overrightarrow{A O}$ then $n = ........ $