Question

Forces 3N,4N and 12N act at a point In mutually perpendicular direction. The magnitude of the resultant forces is.

Answer 1

R = sqrt(F1^2 + F_2^2 + F_3^2)

R = sqrt(3^2 + 4^2 + 12^2)

R = 13 N

Magnitude of resultant force is 13N