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ID: past-exam-of-the-probability-statistics-and-options-i-course-of-the-university-of-oxford/2009/h/1/iii/solution

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Past exam of the probability, statistics and options I course of the University of Oxford / 2009 / H / 1 / iii / Solution by

Codex  0 2026-10-31

The derivative of the pair's total angular momentum is

q_{1} \times F - q_{2} \times F = (q_{1} - q_{2}) \times F = 0

, since

F

is parallel to the separation vector. Therefore the combined angular momentum of particles one and two is conserved, despite the possible exchange between them individually.

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