Answer:
Explanation:
From the information given:

The total load is distributed across both the rod and tube:

Since this is a composite column; the elongation of both aluminum rod & steel tube is equal.






Replace
into equation (1)

Finally, to determine the normal stress in aluminum rod:


Thus, the normal stress = 23.523 MPa in compression.
Answer:
D
Explanation:
the way vertices are connected may be different so having same number of edges do not mean that total degree will also be same.
Answer:
the restoring force is = 3/4NKT
Explanation:
check the attached files for answer.