A heavy stone hanging from a massless string of length 15 m is projected horizontally with speed 147 ms⁻¹.The speed of the particle at the point where the tension in the string equals the weight of the particle is

Options

(a) 10 ms⁻¹
(b) 7 ms⁻¹
(c) 12 ms⁻¹
(d) None of these

Correct Answer:

7 ms⁻¹

Explanation:

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