Questions
If a vector A having a magnitude of 8 is added to a vector B which lies along X-axis, then the resultant of
two vectors lies along Y-axis and has magnitude twice that of B, The magnitude of B is
detailed solution
Correct option is D
According to given condition,A+ Bi^ = Rj^ (where, R is the resultant vector)Also, R = 2B∴ ∣A+Bi^=2Bj^ or A=2Bj^-Bi^∴ A2 = 4B2 + B2 = 5B2Here, A = 8∴ 64 = 5B2⇒ B=645=85Talk 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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