UPSC Civil Service Exam Questions

Q1: A cantilever beam of span 4 m and cross-sectional are 0.3 m wide and 0.4 m deep is subjected to a concentrated load of 10 kN at the free end. Neglecting self-weight, the maximum bending stress at a section 2 m from the free end will be

A 20 kN/m2

B 2500 kN/m2

C 4000 kN/m2

D 5000 kN/m2

ANS:B - 2500 kN/m2

f = M/Z.
f = (10*2)/(0.3*0.4^2)/6 = 2500kn/sqm.



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