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Question

A solid sphere of mass 3kg and radius 0.4m has an angular momentum of 12kg m2/s. What is its angular velocity?

Options

Choose one · Correct answer highlighted

Explanation

I = 25MR2 = 25×3×(0.4)2 = 0.192kg m2. ω = LI = 120.192≈62.5rad/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 62.5 rad/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.