Civil Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 2 (Q.No. 15)
15.
The reaction at support A of the beam shown in below figure, is
Discussion:
61 comments Page 1 of 7.
Yahaya taofeek said:
6 years ago
The answer is zero. There are three support Ra, Rb and Rc. If you convert the distributed load to point load, it gives 5T and act directly opposite Rc. For equillibrium of the body Rc has to be 5T.Ra and Rb are both zero
(2)
Anubala said:
5 years ago
Ra+Rb= wl/2 = (1*10)/2= 5T---> (1).
Moment about A,
Rb*10-(1*10*10)/2=0,
Rb=5T.
Substitute in (1)
Ra=0
The answer is correct.
Moment about A,
Rb*10-(1*10*10)/2=0,
Rb=5T.
Substitute in (1)
Ra=0
The answer is correct.
(2)
Mounika reddy said:
1 decade ago
Ray+Rby = 10T.
The distri load convert to pt load 1*5 for 1st member and 1*5 for 2nd.
Take moment about A is zero Rby = 10T.
SO Ray = 0.
The distri load convert to pt load 1*5 for 1st member and 1*5 for 2nd.
Take moment about A is zero Rby = 10T.
SO Ray = 0.
(1)
Sush said:
7 years ago
1.85 is the correct answer.
Ra=Rb=3wl/16.
Ra=Rb=3wl/16.
(1)
ABDUL KALAM V A said:
6 years ago
It is the reaction, not moment.
Total load is 1x10 = 10t. Taking moments about any support and equating the same, we get a reaction at end supports as 2.5t each and middle support as 5t.
Total load is 1x10 = 10t. Taking moments about any support and equating the same, we get a reaction at end supports as 2.5t each and middle support as 5t.
(1)
U.S.lakshmi said:
6 years ago
I think to find out the reaction at A is step-1 is to separate the continuous beam as two spans as AB and AC and then find out the reactions ; step-2 is from span AC to find out Rc and from span BC find out the reaction Rb; step-3 is from the equilibrium condition is the summation of all vertical reactions should be zero, from this findout the the Ra. Ans., is 4t.
(1)
Eshetu said:
8 years ago
The question is not clear to me. Please explain.
Roop said:
8 years ago
Yes, correct @Vikas.
By moment distribution method Ra is 1.875 T.
By moment distribution method Ra is 1.875 T.
Sajitha B said:
8 years ago
The total load is 10t. For the three supports, the reaction due to the load will be same and equal to 3.33T.
Mani said:
8 years ago
In simply support beam Ra=Rb when centering load so we first change the uniform load.
To point load so,
Ra=Rb.
1*10*1/2=5T.
So reaction at Ra+Rb=5.
Ra+Ra=5 (Ra=Rb).
2ra=5.
Ra=2.5 t.
To point load so,
Ra=Rb.
1*10*1/2=5T.
So reaction at Ra+Rb=5.
Ra+Ra=5 (Ra=Rb).
2ra=5.
Ra=2.5 t.
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