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{Mathematical Physics --- PHZ 3113}\\\vspace {2mm} 
Homework 7 (February 22, 2013) \\
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\noindent 1. Continuation of Midterm 1, Problem~5: 

\noindent Consider $\alpha_1=\alpha_2=\alpha$ and find 
the angle $\alpha_0>0$, so that for $0<\alpha<\alpha_0$ 
\begin{eqnarray} \label{Tension}
  \left|\vec{T}^{\,1}\right| = \left|\vec{T}^{\,2}\right| > 
  \left|\vec{F}^{\,2}\right| 
\end{eqnarray} 
holds (6 points).
\medskip
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\noindent 2. Use Stoke's Theorem to calculate the line integral
of the previous homework (4~points).
\medskip

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