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The maximum bending moment in a simply supported beam length L loaded by a concentrated load W at the mid point is given by _______.

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JKSSB JE Mechanical 02 Nov 2021 Shift 1 Official Paper
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  1. WL/2
  2. WL/8 
  3. WL/4
  4. WL 

Answer (Detailed Solution Below)

Option 3 : WL/4
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Detailed Solution

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Explanation:

Let us assume the concentrated load = P(or W)

RA + RB = P      ---(1)

∑MB = 0

The BM will be maximum on the point at which shear force changes its sign.

So the value of bending moment at a distance x = L/2 is:

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