A) \[\overrightarrow{v}\]remaining unchanged
B) less than \[\overrightarrow{v}\]
C) greater than \[\overrightarrow{v}\]
D) \[\left| \overrightarrow{v} \right|\] in the direction of the largest force BC
Correct Answer: A
Solution :
[a] From polygon law of vector addition we know if the vectors are arranged along the sides of a polygon the resultant of vector becomes zero. Here in this case the forces are represented by the sides of a triangle taken in same order, so their resultant is zero, it means the acceleration of the particle should be zero, hence velocity remains constant.
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