Question

There are two force vectors, one of $5\, N$ and other of $12 \, N$ at what angle the two vectors be added to get resultant vector of $17\, N , 7 \, N$ and $13\, N$ respectively

• A. $0^{\circ}, 180^{\circ}$ and $90^{\circ}$
• B. $0^{\circ}, 90^{\circ}$ and $180^{\circ}$
• C. $0^{\circ}, 90^{\circ}$ and $90^{\circ}$
• D. $180^{\circ}, 0^{\circ}$ and $90^{\circ}$

Answer 1

Answer: (A)

For $17\, N$ both the vector should be parallel i.e. angle between them should be zero.
For $7 \,N$ both the vectors should be antiparallel i.e. angle between them should be $180^{\circ}$.
For $13 \,N$ both the vectors should be perpendicular to each other i.e. angle between them should be $90^{\circ}$.