What is the average force of gravity between Earth and the moon?

Thread starter snakeboy91
Start date Nov 12, 2013
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Average Average force Force Force of gravity Gravity

AI Thread Summary

The average gravitational force between Earth and the Moon is calculated using the formula F = GmM/r^2, where G is the gravitational constant. Given Earth's mass of 6.0 x 10^24 kg, the Moon's mass of 7.4 x 10^22 kg, and their average distance of 3.8 x 10^8 m, the resulting force is approximately 2.1 x 10^20 N. Participants are reminded to show their calculations to receive assistance. The discussion emphasizes the importance of adhering to forum rules and using the correct headings for posts. Understanding the gravitational force is crucial for grasping celestial mechanics.

Nov 12, 2013

snakeboy91

Show that the average force of gravity between Earth (mass = 6.0 X 10^24kg) and the moon (mass = 7.4X10^22 kg) is 2.1X10^20 N. The average earth-moon distance is 3.8 X 10^8 m

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Nov 12, 2013

Ibix

Science Advisor

Insights Author

Hi snakeboy, and welcome to PF.

The forum rules require you to show your work before we can help. You are also supposed to use the three headings that appear when you try to post in this section.

Nov 12, 2013

HallsofIvy

Science Advisor

Homework Helper

Are you not aware that F= GmM/r^2?

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