Jawabanmu

2014-01-20T20:07:43+07:00
M = 20 kg, R1 (luar) = 8cm=0,08m. R2 (dalam) = 5cm=0.05m. I =? 
I= 1/2M(R1²+R2²)= 1/2(20)((0,08)²+(0,05)²)=10(0,0089)=0,089 kgm²

coba di cek lagi yaa takut ada kesalahan ^_^