Author Question: A 0.600-mm diameter wire stretches 0.500 of its length when it is stretched with a tension of 20.0 ... (Read 80 times)

jenna1 · **on:** Jul 29, 2018

A 0.600-mm diameter wire stretches 0.500 of its length when it is stretched with a tension of 20.0 N. What is the Young's modulus of this wire?

A) 5.66 1010 N/m2
B) 3.54 109 N/m2
C) 1.41 1010 N/m2
D) 6.43 109 N/m2
E) 2.78 109 N/m2

Question 2

A 1000-kg object hangs from the lower end of a steel rod 5.0 m long that is suspended vertically. The diameter of the rod is 0.80 cm and Young's modulus for the rod is 210,000 MN/m2. What is the elongation of the rod due to this object?

A) 1.2 cm
B) 0.46 cm
C) 0.12 cm
D) 1.8 cm
E) 0.047 cm