Jawab no 19 Materi gerak melingkar

KINEMATIKA
• Gerak Melingkar

GMB
f = 30 rpm = 30/60 = ½ Hz

a][ pada GMB, uang logam mendapat percepatan sentripetal ke arah pusat lingkaran.

b][ BESAR gaya sentripetal
as = ω² r = (2π f)² r = 4π² f² r
as = 4π² • (½)² • r
as = π² r

b₁) as = 5π² cm/s²
b₂) as = 10π² cm/s²
b₃) as = 15π² cm/s²