correct sir
a mass is suspended from a wire .change in length of wire is Δl.now the same wire is stetched to double its length and the same mass is suspended from the wire.the change in length in this case will become
-
UP 0 DOWN 0 0 2
2 Answers
Lokesh Verma
·2009-08-25 07:48:02
use (F/A)/(ΔL/L) = Y as constant.
then see the inital case A and the 2nd case A.
F/(A/2)ΔL'/2L=F/AΔL/L
4ΔL'=1ΔL
ΔL'=4ΔL