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Rotational Dynamics — Physics STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 SciencePhysicsRotational Dynamics3 Marks
Question
A solid sphere of diameter \(50 cm\) and mass \(25 kg\) rotates about an axis through its centre. Calculate its moment of inertia. If its angular velocity changes from \(2 rad / s\) to \(1 rad / s\) in 5 seconds, calculate the torque applied.
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Answer

I \(=0.625 kg \cdot m ^2 ; \tau=1.25 N \cdot m\)

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