Mechanical Engineering - Strength of Materials - Discussion

Discussion Forum : Strength of Materials - Section 7 (Q.No. 3)
3.
Two shafts 'A' and 'B' are made of same material. The shaft 'A' is of diameter D and shaft 'B' is of diameter D/2. The strength of shaft 'B' is __________ as that of shaft 'A'
one-eighth
one-fourth
one-half
four times
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
12 comments Page 2 of 2.

Ayesh said:   5 years ago
Shaft strength depends upon polar modulus. So the answer is 1/8.

Manjunath said:   5 years ago
T1= τ*z= pi*d^3/12.
T2= τ*z=pi*(d/2)^3/12= 1/8*T1.


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