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(c) The motion of a particle in a plane is governed by the Lagrangian
1
L =
2
} (4² + s®) + ¿vż – zý).
1
+ j) + (yi – xỷ).
(i) Obtain the equations of motion (simplify if possible). Is the force acting on the
particle conservative?
(ii) Verify that
x = Rcost,
y = Rsin t,
is a solution of the equations of motion (here R is a constant).

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