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Calculate the moment of inertia of the sphere having a mass of 12 kg and radius of 78 cm.(a) 7.888 kgm^2(b) 7.300 kgm^2(c) 7.545 kgm^2(d) 7.552 kgm^2This question was posed to me in an interview for job.The query is from Dynamics topic in section Dynamics of Electrical Drives of Electric Drives

Answer»

The correct option is (b) 7.300 kgm^2

For EXPLANATION: The moment of inertia of the egg can be CALCULATED USING the formula I=Σmiri^2. The mass of egg and radius is given. I=(12)×(.78)^2=7.300 kgm^2. It depends upon the ORIENTATION of the ROTATIONAL axis.



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