Question: A hanging wire made of an alloy of iron with diameter 0.1 cm is initially 2.1 m long and a cubic atomic structure. When a 63 kg mass is hung from it, the wire stretches an amount 1.13 cm. A mole (NA = 6.02 × 1023 atoms) of iron has a mass of 56 g/mol, and its density is 7.87 g/cm3. Use g = 9.8 m/s.
Part A: Find the approximate value of the effective spring stiffness of one interatomic bond in iron.
Answer in units of N/m
Include work and exact answer please! Thank you!