Kinematics Question 9
Question: Two vectors $ \overrightarrow{A} $ and $ \overrightarrow{B} $ lie in a plane, another vector $ \overrightarrow{C} $ lies outside this plane, then the resultant of these three vectors i.e., $ \overrightarrow{A}+\overrightarrow{B}+\overrightarrow{C} $ [CPMT 1983]
Options:
A) Can be zero
B) Cannot be zero
C) Lies in the plane containing $ \overrightarrow{A}+\overrightarrow{B} $
D) Lies in the plane containing $ \vec{C} $
Correct Answer: B If $ \vec{C} $ lies outside the plane then resultant force cannot be zero.
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