Question

Two forces of 5N and 7N act on a particle with an angle of 60 degree between them. Find the resultant force.

Answer 1

resultant of any two vectors is given by formula
R = √(v1*v1 +V2*V2 + 2v1v2cos(angle between them))
so, resultant is √( 25+ 49 + 70*1/2)
=√(74 +35)
=√109

Answer 2

Explanation:

answer is angle 107....