Homework AnswerCalculating Force & Distance of Two Masses

AI Thread Summary
The discussion revolves around calculating the gravitational force between two masses, specifically a moon and a planet, using the formula F=Gm1m2/r^2. Participants express confusion regarding the relevance of the given speed of 950 m/s and how to interpret the concept of "1/4 distance apart." Clarifications indicate that the gravitational force acts as centripetal acceleration for the moon's orbit. Ultimately, one participant confirms they have reached the correct answer after receiving guidance. Understanding the relationship between gravitational force, distance, and velocity is crucial for solving the problem.
vipson231
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A moon is orbiting around the planet with a constant distance of 4.0 x 10^8 with...

Homework Statement



Question/w formulas are in attachment.

I know I've been given two masses, 5.5 and 7.35 x 10^ 22 kg, and a distance of 4.0 x 10^8. But what I don't understand is the speed of 950 m/s and the 1/4 distance part. I know you use the formula F=Gm1m2/r^2 formula but what do you do with the velocity that is given and how do you find the 1/4 the distance apart?
 

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hi vipson231! :smile:
vipson231 said:
But what I don't understand is the speed of 950 m/s …

the gravitational force will be the centripetal acceleration times the mass :wink:
 


I already got the answer. Thank you for the clarification though =)
 

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