How Does the Sun's Position Affect Gravitational Acceleration on Earth?

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SUMMARY

The discussion focuses on calculating the horizontal gravitational acceleration of a rock dropped near the Earth's surface when the Sun is positioned close to the horizon. Participants emphasize the need for precise values, specifically the masses of the Sun and Earth, as well as the distance between them, to perform accurate calculations. The term "close to the horizon" is defined as a position where the Sun's gravitational pull is approximately horizontal, impacting the resultant gravitational acceleration experienced by objects on Earth.

PREREQUISITES
  • Understanding of gravitational acceleration concepts
  • Knowledge of the masses of celestial bodies (Sun and Earth)
  • Familiarity with gravitational force equations
  • Basic trigonometry for calculating angles and distances
NEXT STEPS
  • Research the gravitational force formula, F = G(m1*m2)/r²
  • Learn about the distances between celestial bodies, specifically the Earth-Sun distance
  • Explore the concept of gravitational acceleration variations based on celestial positions
  • Investigate the effects of the Moon's gravitational pull on Earth
USEFUL FOR

Astronomy enthusiasts, physics students, and anyone interested in understanding the effects of celestial positions on gravitational forces on Earth.

quark001
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If the sun is close to the horizon, calculate the horizontal gravitational acceleration of a rock dropped near the surface of the earth. Do the same substituting moon for sun.

Calculating (vertical) g is easy and one could apply the same method to get the horizontal g if you knew the masses of the sun and Earth and the distance between the sun and the earth. My problem is the value for this distance. What's meant by "close to the horizon"?
 
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Close to the horizon means the Sun's pull is approximately horizontal.
 

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