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Question

A 1kg mass rotates in a circle of radius 0.8m with a speed of 5m/s. What is its angular momentum about the center?

Options

Choose one · Correct answer highlighted

Explanation

L = mvr. m = 1kg, v = 5m/s, r = 0.8m. L = 1×5×0.8 = 4kg m2/s. As per NCERT, applying relevant law/formula with correct units and sign convention leads to 4.0 kg m²/s. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.