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Strength of Materials - Engineering

Q1:

The maximum bending moment for the beam shown in the below figure, lies at a distance of __________ from the end B.

A l/2

B l/3

C

D

ANS:D -

Bending moment will maximum where shear force is zero.
We have shear for at dist X from point A is,
F= WL/6-[Wx^2/(2L)]. Since F=0.
WL/6=Wx^2/(2L),
On simplification we get x=L/√3.