Civil Engineering - GATE Exam Questions - Discussion

23. 

A propped cantilever beam of span L, is loaded with uniformly distributed load of intensity w/unit length, all through the span. Bending moment at the fixed end is,

[A].
[B].
[C].
[D].

Answer: Option A

Explanation:

No answer description available for this question.

Kaushik said: (Jul 12, 2016)  
Answer for this question should be wl^/12.

As force will be wl acting at l/2 hence moment will be wl^2/2.

Anuj Thakur said: (Dec 7, 2016)  
For simple cantilever it should be A but if cantilever is propped it is C.

Chhaya said: (Jul 10, 2017)  
The given answer is right for propped.

Roy said: (Sep 27, 2017)  
The given answer is right.

Prop reaction 3wl/8. So, fixed end moment is (wl^2/2)-(3wl/8*l)=wl^2/8.

Anu said: (Apr 23, 2018)  
The given ans is correct

Vikram Rana said: (Aug 2, 2018)  
Wl^2/2 is correct because this is a cantilever beam and load -UDL.

Ankita said: (Dec 3, 2018)  
How prop reaction is 3wl/8?

Navi said: (Jul 31, 2019)  
The reaction at A is zero.

Taking moment at x-x from the right side.
So, RA*x-W*l/2*l/4=0.
We get WL2/8.

Anita Takia said: (Jan 15, 2020)  
Given answer is correct.

Fixed end moment = (wl^2/2)-(3wl/8*l) i.e. wl^2/8.

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