A

Admin • 833.24K Points
Coach

Q. Refer to fig
Two plates are fastened by means of two bolts.
The yield strength of bolt is 400N/mm² and factor of safety is 4.
Determine the size of the bolts.

  • (A) 8mm
  • (B) 9mm
  • (C) 10mm
  • (D) 11mm

Explanation by: Admin

permissible hear stress=0.5 x 400 /4 =50n/mm². p=2 (π xd²/4) x τ or 5000=2 x π x d² x 50/4 or d=7.97mm.

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