Multiple choice general knowledge science & technology

The shear stress distribution over a rectangular cross-section of a beam follows

  1. a)a straight line path

  2. b)a circular path

  3. c)a parabolic path

  4. d)an elliptical path

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Shear stress in a rectangular beam follows a parabolic distribution, being zero at the top and bottom surfaces (free surfaces) and maximum at the neutral axis. This is derived from the shear stress formula τ = VQ/(Ib), where Q varies quadratically across the section.

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