Question

The sum of the magnitudes of two forces acting at a point is 16N. The resultant of these forces is perpendicular to the smaller force has a magnitude of 8 N. If the smaller force is magnitude x, then the value of x is

1. 2 N
2. 4 N
3. 6 N
4. 7 N

Answer 1

Correct Answer 3. 6N

Explanation :

F1 + F2 = 16

Coxadinitial vectors are those, which start with same point.

Given A + B = 16 … (i)

Since, resultant is perpendicular to smaller vector