Thanks

d is the right ans !!

C

Why not C please?

A is the answer, there is no vertical reaction and the structure is determinate to degree 2 with only horizontal and moment reactions at the FE, thus consider the FE support as a vertical slider

What will be the natural frequency if we consider the mass of beam also?

I believe all the answers here are wrong, but B is the most appropriate one. Drawing the deflected shape, by first starting at the cantilever implies that the left beam curves downwards, and the right beam curves upwards. From the curvature of the beam, you can infer that the reaction at the left hand column points up, and right hand column reaction points down. Hence you would expect tension to develop on the bottom for the left beam, and tension to develop on the top for the right beam, which is what B is showing (albeit only at the cantilever intersection). I think the author may had made a mistake by assuming that there is somehow a vertical force pointing downwards at the cantilever support, although this is purely my speculation.

u took really interesting ques, loved it thank u❣

B

D

D

A

A

A

C

C

C

B

A

A

C

B

D

Your tutorials on structural behaviour are very interesting.

c

C

C

D

B

A

A is the answer because the vertical reaction is zero cause the first support is ruler

Can you make a video how this is resolve? For not structural engineers

Thanks

Is there any book or document where we can do further learning for the structures behavioural exam that has similar things with explanations ect?

B

A

Thanks

Thanks

Thanks

Thanks

C

Answer = A

Thanks, congratulations

I thought D is correct but a program like STAAD gives completely different results to the choices shown here

Maybe the following is easier. If you remove the right-hand support, then clearly, that point will move to the left. Therefore, the horizontal reaction at the roller support must be to the right. Horizontal equilibrium means the horizontal reaction at the fixed end must be to the left. Vertical equilibrium means no vertical reaction at the fixed support. Sum of moments about the fixed support means the moment reaction must be anticlockwise since the only force causing moment is the applied load. All reactions are found with certainty. Start drawing the BMD from the right support you will get case D.

While B is more probable there is now we can prove that C is impossible, I think. However, as a structural engineer, and an academic, I see a more serious 'mistake'. The load cannot be applied directly to the hinge. While this does not affect the behaviour of the frame it just does not look 'right'.

C ?

A