Questions
The sum of the magnitudes of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of smaller magnitude, what are the magnitudes of forces?
detailed solution
Correct option is C
We have, P + Q = 18and R= 12Qsinθ=P and Qcosθ=RSquaring and adding, we getP2 +R2 = Q2or Q2 - P2 = R2 = 144Solving Eqs. (i) and (ii) , we getP = 5 and Q = 13.Talk 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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