Mechanical Engineering - Strength of Materials - Discussion
Discussion Forum : Strength of Materials - Section 7 (Q.No. 19)
19.
Two solid shafts 'A' and 'B' are made of the same material. The shaft 'A' is of 50 mm diameter and shaft 'B' is of 100 mm diameter. The strength of shaft 'B' is __________ as that of shaft A.
Discussion:
11 comments Page 2 of 2.
MUHAMMAD NABI said:
4 years ago
As we know the strength of the shaft is measured by polar modulus.
Polor modulus = j/r.
Here solid shaft is given so for the solid shaft.
π/16 (d) ^3.
Now as db =100.
And da=50.
So.
π/16 (db) ^3 divide by pi/16 (da) ^3.
After a cancellation we get.
(db/da) ^3.
= (100/50) ^3.
= (2) ^3.
=8.
Polor modulus = j/r.
Here solid shaft is given so for the solid shaft.
π/16 (d) ^3.
Now as db =100.
And da=50.
So.
π/16 (db) ^3 divide by pi/16 (da) ^3.
After a cancellation we get.
(db/da) ^3.
= (100/50) ^3.
= (2) ^3.
=8.
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