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17. A stone of mass 0.25 kg tied to the end of a string is whirled round in a circle of radius 1.5 m with a speed of 40 rev./min in a horizontal plane. What is the tension in the string? What is the maximum speed with which the stone can be whirled around if the string can withstand a maximum tension of 200 N? |
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Answer» tion:Mass of the stone, m = 0. 25 kgRadius of the circle R = 1. 5 mNumber of REVOLUTION per second n = 40/60 = 2/3 rps Angular velocity The centripetal force for the stone is provided by the tension T in the string That's Maximum tension in the string t max = 200NTherefore the maximum speed of the stone is 34. 64 m/s. ✍ Hope its helpful to you! ✍ |
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