How Does Gravity Change with Distance from Earth's Center?

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Discussion Overview

The discussion centers on how gravitational acceleration changes with distance from the center of the Earth, specifically exploring the mathematical relationship and calculations involved. It includes theoretical considerations and mathematical reasoning related to gravitational force.

Discussion Character

  • Technical explanation
  • Mathematical reasoning
  • Homework-related

Main Points Raised

  • One participant states that gravitational acceleration varies inversely with the square of the distance from Earth's center, providing a specific value at the surface of the Earth.
  • Another participant requests clarification on the "multiply-multiply pattern of power functions" mentioned in the context of calculating gravitational acceleration at different distances.
  • A participant explains that if the radius is doubled, the square of the radius increases by a factor of four, leading to a reduction in gravitational acceleration by a factor of one-fourth.
  • A hint is provided that relates the discussion to Newton's law of gravitation, suggesting a connection to established gravitational principles.

Areas of Agreement / Disagreement

The discussion contains multiple viewpoints regarding the calculation of gravitational acceleration and the interpretation of mathematical relationships, indicating that no consensus has been reached.

Contextual Notes

Some assumptions about the applicability of the inverse square law and the specific conditions under which these calculations are made may not be fully articulated.

Kyle M
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the acceleration acting on a falling object due to gravity varies inversely with the square of the object's distance from the center of Earth. At the surface of Earth, where x = 1 Earth Radius, the acceleration is y = 9.8 m/sec(squared)


a.) Use the multiply-multiply pattern of power functions to find the acceleration at 3 and 9 Earth radii from the center
 
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Kyle M, you have to show your attempt before anyone can help.

And what does "multiply-multiply pattern of power functions" refer to?
 
The acceleration is inversely proportional to the square of the radius. For example, if the radius is doubled, its square is multiplied by 4. Because this is inverse proportion, the acceleration is multiplied by 1/4.
 
hint- related to Newtons law of gravitation equation
 

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