- #1
joseg707
- 32
- 0
Homework Statement
A wire of diameter 0.2mm stretches by 0.20% when a 6.28-N force is applied. What is the elastic modulus of the wire?
Homework Equations
Elastic Modulus=F/A/L/[tex]\Delta[/tex]L
The Attempt at a Solution
r=.1mm=1x10-4m
6.28N/(2[tex]\pi[/tex]1x10-8/.02=5x109N/m2
The right answer is 1.0x1011.
What am I doing wrong?