A copper wire has a length of 2.2 meters and a diameter of 7 x 10⁻⁴ meters. What will be the elongation in its length when a 5 kg weight is suspended?
a) 1.75 x 10⁻³ meters
b) 2.85 x 10⁻³ meters
c) 3.92 x 10⁻³ meters
d) 5.41 x 10⁻³ meters