Question

As described in class, the Poisson Bracket [F, G] between two functions Fand G of the generalized positions q, and momenta pi is defined as: Consider a system with Hamiltonian H-P2/2m-Vr = (P, 2+py 2+pz2y2m)-y(x"2 + y"2 + z ^2)-U2 where yis a constant. a) Evaluate [Lz, H] and interpret the result in two ways i.e. what it says about L, and what it says about H b) Using the Poisson Bracket and the given Hamiltonian, find the value of a that makes the quantity P.-af a constant of the motion (i.e. invariant in time).

Answer 1

2 m ot Lzonstaut