Asked by Paula
Show that the vector C = p × l − mkê_r is a conserved quantity for the motion in a central potential U(r) = −k/r. Here p is the linear momentum, and l is the angular momentum.
Note: C, p, and l are supposed to have arrows on top to indicate they are vectors; ê_r is a unit vector in the direction of r.
Note: C, p, and l are supposed to have arrows on top to indicate they are vectors; ê_r is a unit vector in the direction of r.
Answers
Answered by
Paula
C = p × l − mkê_r is the Laplace-Runge-Lenz (LRL) vector.
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