Kinematics Question 445
Question: Given that X $ \vec{A}+\vec{B}+\vec{C} $ = 0, out of three vectors two are equal in magnitude and the magnitude of third vector is $ \sqrt{2} $ times that of either of two having equal magnitude. Then, angle between vectors are given by
Options:
A) $ 30{}^\circ ,60{}^\circ ,90{}^\circ $
B) $ 45{}^\circ ,45{}^\circ ,90{}^\circ $
C) $ 90{}^\circ ,135{}^\circ ,45{}^\circ $
D) $ 90{}^\circ ,135{}^\circ ,135{}^\circ $
Correct Answer: D [d] Angle between $ \vec{A} $ and $ \vec{B} $ it’s $ 90^{o} $ Between $ \vec{B} $ and $ \vec{C} $ it’s $ 135{}^\circ $ and that between $ \vec{A} $ and $ \vec{C} $ it’s $ 135{}^\circ $ .
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