Turning points of a classical harmonic oscillator

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ehrenfest
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Homework Statement


The turning points of a classical harmonic oscillator occur when the potential energy is equal to the total energy, correct?

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ehrenfest said:

Homework Statement


The turning points of a classical harmonic oscillator occur when the potential energy is equal to the total energy, correct?

Because kinetic energy and thus velocity is then zero. (Alternatively, for the classical oscillator, maximum PE would be at maximum displacement, which defines a "turning point".)