What is the oscillation frequency of a marble in a parabolic bowl?

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SUMMARY

The oscillation frequency of a marble in a parabolic bowl described by the equation y = ax² can be determined using the conservation of mechanical energy. The potential energy (EP) is expressed as EP = mgy = mgax². For small oscillations, the approximation sin(t) ≈ t is applicable. The discussion emphasizes the need to formulate the correct differential equation to analyze the system accurately, including considerations for rotational energy at larger angles.

PREREQUISITES
  • Understanding of mechanical energy conservation principles
  • Familiarity with potential energy equations in physics
  • Knowledge of differential equations and their applications
  • Basic concepts of oscillatory motion and small angle approximations
NEXT STEPS
  • Formulate the differential equation for oscillation in a parabolic potential
  • Explore the effects of rotational energy on oscillation frequency
  • Study the derivation of frequency for small oscillations in harmonic systems
  • Investigate the implications of varying the parameter 'a' in the parabolic equation
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Students studying classical mechanics, physics educators, and anyone interested in the dynamics of oscillatory systems in potential fields.

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Homework Statement



A marble is oscillating in a parabolic bowl ( y = ax^2 ) Assuming mechanical energy is conserved, and that the oscillation amplitude is small, find the oscillation frequency.
(Use the potential energy to find the force acting on the marble as a function of x)

Homework Equations



Well obviously EP = mgy = mgax^2
small oscillations: sin t can be approximated by t.

I can't figure out how to put up the differential equation correctly.
 
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cheimdal said:

Homework Statement



A marble is oscillating in a parabolic bowl ( y = ax^2 ) Assuming mechanical energy is conserved, and that the oscillation amplitude is small, find the oscillation frequency.
(Use the potential energy to find the force acting on the marble as a function of x)

Homework Equations



Well obviously EP = mgy = mgax^2
small oscillations: sin t can be approximated by t.

I can't figure out how to put up the differential equation correctly.

I'm not sure you can discount the energy in the rotation of the rolling ball. At least at first, I think you should include it in your equations. Then you may be able to neglect it for small angles, but I'm not sure without seeing the equation written out...
 

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