Inertial Frame: Defining Perfection

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SUMMARY

A perfectly inertial frame cannot be defined due to the complexities of motion in the universe. The Earth rotates on its axis, orbits the sun, and moves through the galaxy, which complicates the definition. To approximate an inertial frame, one must select a frame that is sufficiently large for the context, such as using the Earth for atomic considerations or accounting for its rotation when analyzing oceanic flows.

PREREQUISITES
  • Understanding of classical mechanics
  • Familiarity with inertial and non-inertial reference frames
  • Basic knowledge of celestial mechanics
  • Concept of frame of reference in physics
NEXT STEPS
  • Research the principles of classical mechanics and inertial frames
  • Study the effects of Earth's rotation on various physical systems
  • Explore celestial mechanics and the motion of celestial bodies
  • Learn about non-inertial reference frames and their implications
USEFUL FOR

Physics students, educators, and anyone interested in the complexities of motion and reference frames in classical mechanics.

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Homework Statement


How can i define a perfectly inertial frame ?
 
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You can't.
The Earth goes around her axis, which goes around the sun, which goes around the galaxy, which goes around ...

Just take a frame that is "big enough" (e.g. if you're considering atoms, the Earth will usually be big enough, but if you're considering oceanic flows, you need to take the Earth's rotation into account) - if you do that carefully it will count as inertial.
 

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