A and B are two steel wires and the radius of A is twice that of B. If they are stretched by the same load, then the stress on B is ____.
A. four times that of A
B. two times that of A
C. three times that of A
D. same as that of A
Answer:A
A and B are two steel wires and the radius of A is twice that of B. If they are stretched by the same load, then the stress on B is ____.
A. four times that of A B. two times that of A C. three times that of A D. same as that of A