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For a simply supported beam of length L with UDL w (per unit length), maximum bending moment is: 
AwL²/8 at midspan
BwL² /4
CwL/4
DwL/2
Answer & Solution
Correct answer: A. wL²/8 at midspan
SSB with UDL: reactions = wL/2 each. SF varies linearly from +wL/2 to -wL/2 (zero at midspan). BM is parabolic, max at midspan = wL²/8. Max deflection = 5wL⁴/(384EI).
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