A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10-5m3 & young’s modulus is 1011N/m2.

A wire with a radius of 5mm is hung freely from the ceiling. A load of

1.	A wire with a radius of 5mm is hung freely from the ceiling. A load of 5N is applied to its free end. Find the elongation in the wire if its volume is 7.85*10-5m3 & young’s modulus is 1011N/m2.
A.	6.21*10-7m
B.	7.00*10-7m
C.	6.36*10-7m
D.	8.00*10-9m
Answer» D.