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Two vectors of different magnitude are found to have a resultant of magnitude R. On reversing one of them, the resultant is again found to have the same magnitude R. Then the angle between the vectors must be
detailed solution
Correct option is A
Given a→ + b→=R, on reversing the second vector a→ − b→=R . Thus a→ + b→=a→−b→. If θ is angle between a→ and b→, then a2+b2+2abcosθ=a2+b2−2abcosθ.Solve for θTalk to our academic expert!
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(N-1) identical forces of magnitude F act simultaneously on a particle each making an angle of with the preceding one, the resultant is
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