MHT CET 2022 Physics question
A string of length 'L' fixed at one end carries a mass 'm' at the other end. The string makes r.p.s. around the vertical axis through fixed end. The tension in the string is
Answer: (D)
Solution
The mass moves in a horizontal circle of radius (string taken horizontal, i.e. gravity neglected), and the tension supplies the centripetal force: . With frequency r.p.s., $ω=2π
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