You hang a 10 kg mass from a copper wire, and the wire stretches by 8 mm. Then you hang the same mass from a second copper wire, which is twice as long, but has the same diameter. What happens? (A)...

You hang a 10 kg mass from a copper wire, and the wire stretches by 8 mm. Then you hang the same mass from a second

copper wire, which is twice as long, but has the same diameter. What happens?

(A) The second wire stretches 4 mm.

(B) The second wire stretches 8 mm.

(C) The second wire stretches 16 mm.