Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 1 (Q.No. 37)
37.
A composite shaft consisting of two stepped portions having spring constants k1 and k2 is held between two rigid supports at the ends. Its equivalent spring constant is
k1+k2
Discussion:
29 comments Page 2 of 3.
Koribilli hemanth said:
9 years ago
The given answer is wrong.
The right answer is K1 + K2, as we know that any shaft whether stepped or normal if it fixed rigidly between the two supports, it acts like a parallel shaft. Because if apply torque anywhere on the shaft which is fixed between two rigid supports the angle of deformation of both the shafts is same.
The right answer is K1 + K2, as we know that any shaft whether stepped or normal if it fixed rigidly between the two supports, it acts like a parallel shaft. Because if apply torque anywhere on the shaft which is fixed between two rigid supports the angle of deformation of both the shafts is same.
Karthik said:
9 years ago
Which is the correct answer? Please tell me.
Swapnil Shinde said:
9 years ago
As the both ends are fixed (then torque could be applied at the junction of the compound shaft ) hence it forms the parallel combination, hence answer will be K1 + K2.
And if one end is free (then torque will be applied at the free end) hence it forms the series combination , and then the answer will be C.
Hope it will clear the doubts.
And if one end is free (then torque will be applied at the free end) hence it forms the series combination , and then the answer will be C.
Hope it will clear the doubts.
Dev verma said:
9 years ago
True Answer is option C.
V.raju said:
9 years ago
When springs in series the spring constant is k1k2 / k1 + k2.
Bindusara said:
1 decade ago
Since the compound shaft is fixed rigidly at both ends the case is similar to that of springs connected in parallel so the equivalent spring constant is K1 + K2.
Yella said:
10 years ago
It becomes parallel case so equivalent stiffness is k1 + k2.
Subbu said:
10 years ago
How it is k1k2? The units are not even matching.
Baburao said:
10 years ago
Please rectify the wrong answers. Provide answer with description.
Vitthal said:
10 years ago
What is mean by rigidly connected?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers