Gravitational Field Variation of Disc Orbitating Earth

AI Thread Summary
The discussion revolves around a hypothetical scenario where the moon is modeled as a disc orbiting Earth, prompting a question about gravitational field variations at the poles and Earth's center of mass. Participants clarify that the question is a homework assignment and suggest reposting it in the appropriate section for better assistance. There is an emphasis on the need for the original poster to attempt a solution before seeking help. The conversation highlights the importance of following forum guidelines for homework-related inquiries. Overall, the focus is on understanding gravitational effects in this unique disc model.
LeoPedranjo
Messages
5
Reaction score
1
Moved from another forum, so homework template missing
Hey guys, take a look at this question if you may

Suppose the moon, instead of a sphere, is a disc orbitating the Earth ( the moon's total mass is equal to the disc's total mass), the intern radius of the disc is equal to half the distnce between moon and Earth's center of mass and the external radius equals double of the distance between moon and Earth's CM. Find an algebric expression that determines: a) the variation in the gravitacional field due to the disc in the north pole or south pole. b) the variation in the gravitational field due to the disc in Earth's center of mass.

That is the whole question. Will there be any effect on the poles at all? Considering that the Earth will pull the disc to its center...

Ty
 
Physics news on Phys.org
Is this a homework question or just a random exercise? If it's hw, it should be posted on the homework forum.
 
UncertaintyAjay said:
Is this a homework question or just a random exercise? If it's hw, it should be posted on the homework forum.
Its hw, sorry!
 
LeoPedranjo said:
Its hw, sorry!

OK please repost in the appropriate homework section and use the homework template :smile:Dave
 
You will have to give an attempt at a solution to get help with this problem.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Trying to understand the logic behind adding vectors with an angle between them'

Thread 'Trying to understand the logic behind adding vectors with an angle between them'

My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
View full post »

Similar threads

Calculating Tidal Range (Gravitation)
Replies
12
Views
2K
Calculating the Distance of a Zero Gravitational Field Between Earth and Moon
Replies
2
Views
2K
Where between the Moon and the Earth is the gravitational potential=0 ?
Replies
21
Views
3K
Finding distance between Earth and Moon in gravitational fields
Replies
5
Views
2K
Gravitational Field Strength at the equator and poles
Replies
23
Views
4K
Gravitational equipotential multiple choice problem
Replies
4
Views
2K
How does the rotation of Earth affect the height of a tidal bulge?
Replies
1
Views
1K
Foucault Pendulum at the North Pole
Replies
9
Views
2K
I The gravitational center of the Earth
Replies
3
Views
2K
Universal Gravitation and/or Tidal Forces?
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top