Answer: 2.8 kJ
Explanation: Given that
The mass M = 32 kg
w = 110 rad/s
r = 0.380 m
Rotational kinetic energy = 1/2 Iw^2
Where I = moment of inertia
I = Σ mr^2
I = 32 × 0.38^2
I = 4.6208
Rotational K.E = 1/2 × 4.6208 × 110^2
Rotational K.E = 27955.84 J
= 2.8 KJ approximately
