Fx = F1 cos 45 o - F2
= 20.1/2V2 - 10V2
Fx = 10V2 - 10V2 = 0
Fy = F1 sin 45 o = 20.1/2 V2
Fy = 10V2
___________
R = VFx^2 + fy^2
______________
R =V0^2 + (10V2)^2
_____
R = V100.2
R = V200
R = V100x2
R = 10V2
jawaban : E
Baca Juga: Soal Ulangan Biologi Kelas 10 Bab Animalia, Dilengkapi Pembahasan 2021 Part 1