azkiahiyas
Sudut C = 90 Fc = akar (Fca^2 + Fcb^2 + 2.Fca.Fcb.cos 90) karna cos 90 = 0, maka Fc= akar (Fca ^2 + Fcb^2) karna qa=qb=qc= q. dan kita misalkan jaraknya = r, dmana rac=rbc=r Fc= akar ( (k.q^2/r^2)^2 + (k.q^2/r^2)^2) = akar ( (k^2.q^4/r^4) + (k^2.q^4/r^4)) = akar ( 2 (k^2.q^4/r^4) ) Fc= k.q^2/r^2 akar (2)
Fc = akar (Fca^2 + Fcb^2 + 2.Fca.Fcb.cos 90)
karna cos 90 = 0, maka
Fc= akar (Fca ^2 + Fcb^2)
karna qa=qb=qc= q. dan kita misalkan jaraknya = r, dmana rac=rbc=r
Fc= akar ( (k.q^2/r^2)^2 + (k.q^2/r^2)^2)
= akar ( (k^2.q^4/r^4) + (k^2.q^4/r^4))
= akar ( 2 (k^2.q^4/r^4) )
Fc= k.q^2/r^2 akar (2)