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
zero
5 T
10 T
1 T
4 T.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
61 comments Page 6 of 7.

Suraj Patil said:   9 years ago
The answer should be 5T.

Sufyan Parkar said:   9 years ago
First of all, where is A and where is B we can't assume on our own.

Abhishek das said:   9 years ago
Moment will be zero at A.

Rajendhra said:   9 years ago
In simply support the end moments are zero.

DANISH KASSAR said:   9 years ago
Reaction.

Ra + Rb = 1 * 10 = 10..........(1).
Rb * 10 = 10.
Rb = 1.
Put, Rb in above equation then,
Ra = 9.
The moment at A point.
M = 1 * 10 - 1 * 10 = 0.
The moment at A is zero this is answer.

Siva said:   9 years ago
This problem can be solved by using propped methods.

First find middle support reaction using super imposition principle (compatability eqn) at deflection where the middle support =0.

Srikanth B R said:   9 years ago
No need to calculate simple assumption at any support, the reaction will always be zero.

Vikas said:   8 years ago
It's 1.875 by three moment theorem.

KIRTI said:   8 years ago
Yes, you are correct @Rahul.

Ashar wazir said:   8 years ago
Ra + Rb = 10t
Ra = 10t - Rb,

Therefore to find Ra take moments about A.
Rb = 10t-10t = 0.
Therefore, option A is correct.


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