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**✕**10

^{10}Pa.)

Work F=Y*A*change in L/L_0

I have no idea what is L_0 and L_f? Please help me.

- Thread starter Cbarker1
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- Thread starter
- #1

Work F=Y*A*change in L/L_0

I have no idea what is L_0 and L_f? Please help me.

- Mar 1, 2012

- 980

$\Delta L = 8.5 \times 10^{-3} \, m$

$r = 4.25 \times 10^{-4} \, m$

$E=2.0 \times 10^{11} \, N/m^2$

$F = \dfrac{E \cdot \pi r^2 \cdot \Delta L}{L}$