# Net force an an infinitesimal string

1. Sep 7, 2007

### ehrenfest

1. The problem statement, all variables and given/known data
The book I am using (Zwiebach on page 66) uses the expression

$$hello$$

$$dF_v = T_0 \frac{ \partial{y}{\partial{x}} |_{x+dx} -T_0 \frac{ \partial{y}{\partial{x}} |_{x}$$

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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