Questions
If F1 and F2 are two vectors of equal magnitudes F such that I F1 . F2 I= I X F2|, then IF1 + F2| equals to
a
(2+2)F
b
2F
c
F2
d
None of these
detailed solution
Correct option is A
F·Fcosθ=F·Fsinθ or tanθ=1 or θ=45°F1+F2=F2+F2+2F·Fcos45°=(2+2)FTalk 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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