A 6.34 m long copper wire that has a cross-sectional area of 11.08 x 10^-6 m² is used to slowly lift and support a certain load. If the length of this wire changes by 0.78 mm while the load is being held in place above the ground, then what was the weight of the load (in N)? (Note: the value of Young's Modulus for copper is 11.0 x 10¹⁰ Pa.)