mohon bantuannya!!!1-4

1) L = I.w
= mr². (2π f)
= mr². (2π n/t)
= 0,02. 2².(2π.25/5)
= 0,08. (10π)
= 0,8π
= 0,8 . 3,14
= 2,512 kgm²/s

3) L = I.w
= mr². w
= 2.10^-3. (2.10^-2)².10
= 2.10^-3. 4.10^-4. 10
= 8.10^-6 kgm²/s

4) €Tx = 0
Tbc cos 60 = Tab cos 0
½Tbc. = Tab

€Ty = 0
Tbc sin 60+ Tab sin 0 = w
½√3 Tbc + 0. = 300
Tbc. = 600/√3
= 200√3 N

Tab = ½ Tbc
= ½.200√3
= 100√3 N