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AP EAMCET202316 May 2023Evening ShiftPhysicsMotion in Two DimensionsActual

A body of mass 10 ~g is tied to a string of length 0.4 ~m and it is whirled in a horizontal plane with a speed of 6 ~ms ⁻¹ . Then the tension in the string is

Options

  1. A1.9 ~N
  2. B36 ~N
  3. C0.9 ~N
  4. D3.6 ~N

Correct answer

C. 0.9 ~N

Step-by-step solution

Mass of body, m = =10 10⁻³ ~kg length of string, L =0.4 ~m speed, v=6 ~m / s In horizontal plane Tension, T = mv ^2 r Here, length of string = radius of string T = 10⁻² (6)^2 0.4 =0.9 ~N

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