The vector sum of two forces is perpendicular to their vector differences. In that case, the forces
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Verified by ExpertsThe correct answer is:
A
If two vectors are perpendicular then their dot product must be equal to zero. According to problem
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
i.e. two vectors are equal to each other in magnitude.
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