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AP EAMCET201825 Apr 2018Morning ShiftPhysicsMechanical Properties of SolidsActual

A rubber cube of side 5 cm has one face fixed while a tangential force 1800 N is applied on its opposite face. If modulus of rigidity of rubber is 2 . 4 × 10 6 N m - 2 , then the lateral displacement of the strained face is______.

Options

  1. A3   mm
  2. B5   mm
  3. C15   mm
  4. D1 . 5   mm

Correct answer

C. 15   mm

Step-by-step solution

Recall the formula of modulus of rigidity, η = F A × L l = 1800 25 × 10 - 4 × 5 × 10 - 2 l = 2 . 4 × 10 6 l = 1800 25 × 10 - 4 × 5 × 10 - 2 2 . 4 × 10 6 = 15   mm

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