Question

The resultant of two be tors is perpendicular to one of them and has the magnitude 4m.if the sum of the magnitude of two vectors is 8m then their respective magnitude is

Answer 1

Answer:

3 and 5

Explanation:

suppose vectors are a and b , r is resultant

so r^2 + a^2 = b^2 if angle b/w a and r is 90

b^2=a^2 + 16

(b+a)*(b-a)=16

b+a=8

b-a=2

so b=5 and a=3