A string of length ℓ fixed at one end carries a mass m at the other. The string makes 2/$\pi$ revolutions/sec around the vertical axis through the fixed end. The tension in the string is ______.

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A string of length ℓ fixed at one end carries a mass m at the other. The string makes 2/$\pi$ revolutions/sec around the vertical axis through the fixed end. The tension in the string is 16 ml. Explanation: n = 2/pi r.p.s. T sin$\theta$ = Mω2R .......(i) T sin$\theta$ = Mω2ℓ sin$\theta$.......(ii) From (i) and (ii), T = Mω2ℓ = M4$\pi$2n2ℓ = "M"4pi^2(2/pi)^2ℓ = 16 ml

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