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Question

A stone tied to a string moves in a circle of radius 1.5m with a frequency of 2Hz. What is its centripetal acceleration?

Options

Choose one · Correct answer highlighted

Explanation

Angular speed ω=2πf=2π×2=4πrad/s. As per NCERT Chapter 3, equations v=u+at, s=ut+½at², v²=u²+2as describe uniformly accelerated motion. Applying correct signs and units gives 150 m/s² as the result, so option A is correct.