Q7 of 43 Page 85

The sum of the magnitude of two forces acting at a point is 16N. If the resultant force is 8N and its direction is perpendicular to a small force, then the forces are?

Let us consider two forces

Given: …1


…2


Now, and is perpendicular to.


So,



(Using 2)




(Using 1)


…3


Solving 1 and 3, we get:



N


So, N


Hence two forces are 10 N and 6 N


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