In a simply supported beam (l + 2a) with equal overhangs (a) and carrying a unif

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Question
In a simply supported beam (l + 2a) with equal overhangs (a) and carrying a uniformly distributed load over its entire length, B.M. at the middle point of the beam will be zero if
Options
A. l = 2a
B. l = 4a
C. l < 2a
D. l > a
E. l > 3a.

Correct Answer

l = 2a

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