a03 - \documentclass[12pt]cfw_article % BB Jan 19 2009....

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\documentclass[12pt]{article} % BB Jan 19 2009. \usepackage{epsfig} \textheight 9.0in \textwidth 6.0in \topmargin -0.4in \headsep 0.4in \oddsidemargin 0.25in \evensidemargin 0.25in \def\sqr#1#2{{\vcenter{\hrule height.#2pt \hbox{\vrule width.#2pt height#1pt \kern#1pt \vrule width.#2pt} \hrule height.#2pt}}} \def\square{{\mathchoice\sqr64\sqr64\sqr{4.2}3\sqr{3.0}3}} \def\undertext#1{$\underline{\smash{\hbox{#1}}}$} \pagestyle{empty} \begin{document} \begin{center} {\bf ADVANCED DYNAMICS --- PHY 4241/5227}\\\vspace {2mm} {\bf HOME AND CLASS WORK -- SET 3}\\% \vspace {3mm} (January 16, 2009) \\ \end{center} \setcounter{equation}{0} \begin{description} %%%%%%%%%%%%%%%%%%%%%%%%%% \item{(12)} Use Lagrange multipliers for the following problems. \begin{enumerate} \item Determine the constraint force for the motion on a circle (no other forces acting) as function of the velocity and radius. \item An inclined plane is given by the constraint $f=y-y_0+ax=0$. Gravity acts parallel to the $y$ direction. Find the constraint
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