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Most Important Selected Qs for JEE AdvancedPhysicsMechanical Properties of Solids

A horizontally oriented thin copper rod of length / is rotated about vertical axis passing thorugh its middle. The breaking stress of copper is and density is . The frequency of rotation at which this rod just ruptures is

Options

  1. A^2 l^2 rpm
  2. B2 ^2 l^2 rps
  3. C2 ^2 l^2 rps
  4. D3 2 ^2 l^2 rpm

Correct answer

C. 2 ^2 l^2 rps

Step-by-step solution

The correct answer is option (C) aligned & T_ m a = m ^2 8 = A & m ^2 8 = A & = 8 ^2 =2 n & n= 2 ^2 ^2 r p s aligned

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