UPSC Civil Service Exam Questions

Q1: A uniform simply supported beam is subjected to a clockwise moment at the left end. What is the moment required at the right end so that rotation of the right end is zero ?

A 2 m

B m

C m/2

D m/3

ANS:B - m

Due to Moment m(ACW) at A slope at B is ml/6EI(ACW) so for slope to zero at B provide let m' is moment m'l/3EI-ml/6EI = 0.
By solving m'= m/2.



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