A fixed beam of unifrom section is carrying a point load at its mid-span. If the moment of inertia of the middle half length is now reduced to half its previous value, then the fixed end moments will

ANS:A - Increase

Dear friends.

I have calculated the bending moment for the beam before the changes and after the changes by the column analogy method and in this method, I have found that in the first case when there is no change in the beam the moment will be PL/8 and in the second case when there is a change in the geometry of beam then its value will be PL/12 so I think option b should be the correct answer. Am I right? Please explain me.