A hanging titanium wire with diameter 2 mm ( m) is initially 3 m long. When a 5 kg mass is hung from it, the wire stretches an amount XXXXXXXXXXmm, and when a 10 kg mass is hung from it, the wire...

A hanging titanium wire with diameter 2 mm ( m) is initially 3 m long. When a 5 kg mass is hung from it, the wire

stretches an amount 0.4035 mm, and when a 10 kg mass is hung from it, the wire stretches an amount 0.807 mm. A mole of

titanium has a mass of 48 grams, and its density is 4.51 grams/cm3. Find the approximate value of the effective spring

stiffness of the interatomic force, and explain your analysis.