Sebuah piringan berputar dg frekuensi 4 hz percepatan sentripetal yg berjarak 20 cm dr poros piringan adalah...?

Penyelesaian:

Dik: f = 4 hz
r = 20 cm = 2.10^-1 m

percepatan sentripetal...?

Jawab

as = ω² . r

ω = 2πf
= 2π.4
ω = 8π

as = ω² . r
= (8π)² . (2.10^-1)²
= 64π² . 4.10^-2
= 256 . 10^-2 π²