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Rigid Rotor question requiring quantum mechanics.

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Feb25-12, 02:14 PM
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1. The problem statement, all variables and given/known data

A rigid rotor with moment of Inertia I is known to be in a state with eigenfunction Y3,-2(θ,∅).

A. What is the rotational energy of the rotor in terms of I and h bar.
B. What is the uncertainty in the measurement of the energy of the rotor?

2. Relevant equations

Y3,-2(θ,∅) = (105/32∏)^(1/2)sin^2(θ)cos(θ)e^-i2∅.

3. The attempt at a solution

All i have figured out from the notes is that for a rigid rotor E = 0.5ω2 and delta E = <E^2>-<E>^2 however i cannot apply it here.
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