Question

two forces have the same magnitude F, what is the angle between the two vectors if their sum has a magnitude of (a) 2F? (b) sqrt of 2F (c) zero? Sketch the three vectors in each case.

Answer 1

eek. vectors

Answer 2

elo

Answer 3

in 1st case the both vectores are parallel so sum is equal to 2F


while in 2nd case both are perpendicular
sum=sqrt(squareF1 + squareF2)
sum=F(sqrt 2)


in third case both the vectores are opposite
sum =F1- F2