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ly llts aiameter.13. The moment of inertia of a flywheel havingkinetic energy 360 J and angular speed of 20rad/s is(a) 18 kg m2(c) 2.5 kg m2(b) 1.8 kg m2(d) 9 kg m2

Answer»

Kinectic Energy = I(w^2) /2

Where, I = moment of inertiaw = angular speed

I(w^2) = 360*2

I = 720/20*20

I = 1.8 kg m2

(b) is correct option



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