 Solution

ID: past-exam-of-the-physics-1-paper-of-the-university-of-oxford/2019/9/a/solution

L (q_{i}, \overset{q}{˙}_{i}, t)

\frac{d}{d t} \frac{\partial L}{\partial q ˙ _{i}} - \frac{\partial L}{\partial q _{i}} = 0.

Ideal constraints can either be incorporated into the independent coordinates or treated using Lagrange multipliers, as in solution.

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