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AP EAMCET202023 Sep 2020Morning ShiftPhysicsMechanical Properties of SolidsActual

A wire of length 1 m and radius 2 mm is vertically clamped. The lower end is twisted through an angle of 45 ° . The angle of shear is _____

Options

  1. A0 . 09 °
  2. B0 . 9 °
  3. C9 °
  4. D90 °

Correct answer

A. 0 . 09 °

Step-by-step solution

from figure tan ϕ = r sin θ l here θ and ϕ are small ⇒ ϕ = r θ l   = 2 × 10 - 3 × 45 1 = . 09 °

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