Q. 153.7( 3 Votes )

The resultant of

Answer :

If the forces and act on a point, then the resultant force F is given as:


Where Ɵ = Angle between and


Now, given that at Ɵ = 90°, F = 5 N


So,




…1


Given when Ɵ = 120°, then F = 13 N


So,



..2


Solving 1 and 2, we get:


,



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