Kinematics Question 430
The angle between two vectors $ \overrightarrow{A}\And \overrightarrow{B} $ is $ \theta $ . Vector $ \overrightarrow{R} $ is the resultant of vectors $ \overrightarrow{A}\And \overrightarrow{B}, $ if $ \overrightarrow{R} $ makes an angle $ \frac{\theta }{2} $ with $ \overrightarrow{A} $ then
Options:
A) A = 2B
B) A = B/2
C) A = B
D) AB = 1
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ \angle ZXY+\angle YZX=\angle XZY $
$ \Rightarrow $ $ \angle YZX=\frac{\theta }{2} $ So XYZ, it’s an isosceles triangle so $ |\overrightarrow{A}|=|\overrightarrow{B}| $
BETA
