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UPSC Civil Service Exam Questions

Q1:
In the given figure, the maximum bending moment at the fixed end of the cantilever caused by the UDL is M. The bending moment at section 1/5 from the free end is

A 4%of M

B 5% of M

C 10%of M

D 20% of M

ANS:A - 4%of M

B.M at fixed end = (wl^2)/2,
B.M at distance l/5= wl^2/50 = (BM at fixed end)/25,
Percentage = (M/25M)*100 = 100/25 = 4%.



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