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<sup>-7</sup>m
B.	7.00*10<sup>-7</sup>m
C.	6.36*10<sup>-7</sup>m
D.	8.00*10<sup>-9</sup>m
Answer» D. 8.00*10<sup>-9</sup>m