Practice question
Question
For a body rotating about a fixed axis, what is true about particles on the axis?
Explanation
Particles on the axis of rotation have a perpendicular distance r = 0 from the axis, so their linear velocity v = ωr = 0, meaning they remain stationary. As per NCERT, applying relevant law/formula with correct units and sign convention leads to They remain stationary. This satisfies dimensional consistency and physical conditions given, so option B is scientifically correct.
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