Gravitation and magnetic field?

Click For Summary

Discussion Overview

The discussion revolves around the concepts of gravitation and magnetic fields, exploring their differences, interactions, and implications for phenomena such as planetary orbits and potential anti-gravity mechanisms. Participants engage in both theoretical and conceptual inquiries related to these fundamental forces.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant notes that gravity keeps us on Earth while the magnetic field protects us from solar radiation, questioning how these forces operate differently.
  • Another participant asserts that anything with mass has gravity, while magnetism requires a moving charge, suggesting that creating an anti-gravity device is not currently feasible.
  • There is a mention of the possibility of using strong magnets to create a repulsive force, although one participant clarifies that all magnets have both north and south poles.
  • One participant highlights existing magnetic levitation trains, indicating that such technology relies on proximity between magnets and is not applicable for flight.
  • Several participants discuss the reasons planets orbit the Sun, with one suggesting that speed and initial position are factors, while another emphasizes the role of gravitational attraction and orbital mechanics.
  • There is a debate about the role of centrifugal force in orbits, with some participants questioning its relevance and others clarifying that orbits result from a balance of gravitational pull and orbital speed.

Areas of Agreement / Disagreement

Participants express differing views on the mechanisms of planetary orbits and the feasibility of anti-gravity devices. No consensus is reached regarding the role of centrifugal force, and multiple competing explanations for planetary motion are presented.

Contextual Notes

Some statements rely on assumptions about gravitational and magnetic interactions that are not fully explored. The discussion includes varying levels of understanding about orbital mechanics and the nature of forces involved.

ugur0072
Messages
7
Reaction score
0
I am wondering about that the Earth ( and other planets or suns) have gravitation and magnetic field and that they are working different. I know that the gravitation makes us to stay on the Earth while the magnetic field is protecting us from the sun.

another thing i am wondering is that, can you make an antigravity and make things fly by making a strong enough magnets. Example if you make very strong "southpol" magnet on south and "northpol" magnet on north so the will resistant each other and fly?. I know it sounds little crazy but it sounds like possible for me :P

(Sorry for my bad english btw. Just ask if you don't understand what i am writing :P)
 
Physics news on Phys.org
Anything with mass has gravity.

Magnetism requires a moving charge.

To get an anti-gravity device you need to cancel out gravity. As far as we're aware this is not possible.

The Earth's magnetic field is not strong enough to lift anything.

You can't have just a south pole or just a north pole, all magnets have both.
 
you can however change or control directions of moving charged particles using magnetic fields.
 
There are already trains that levitate themselves using magnetic fields, but this only works because the magnets are very close to each other. You could not use it to fly around or anything.

What would you like to know about gravity and magnetic fields of the planets?
 
I don't know very much about this, but the reason for why the planets is going around the Sun, is because the planets have speed, and higher speed means longer away from sun. (Like a roulette) I am right or is it another reason for why the planets are not crashing in the sun but going around it.
 
ugur0072 said:
I don't know very much about this, but the reason for why the planets is going around the Sun, is because the planets have speed, and higher speed means longer away from sun. (Like a roulette) I am right or is it another reason for why the planets are not crashing in the sun but going around it.

I think this site could help illustrate how orbit works. Essentially the orbiting object has enough speed that as it falls it misses the object it is orbiting.

EDIT: this animation is a lot more informative
 
Last edited:
ryan_m_b said:
I think this site could help illustrate how orbit works. Essentially the orbiting object has enough speed that as it falls it misses the object it is orbiting.

EDIT: this animation is a lot more informative

Ok, thanks :D . I am understanding it better now. Does it mean that the position of the planet is not because of the speed, but because of its start location?
 
its because of the centrifugal force.
 
ugur0072 said:
Ok, thanks :D . I am understanding it better now. Does it mean that the position of the planet is not because of the speed, but because of its start location?

I'm not sure what you mean by "position of the planet". Do you mean why is the planet's orbit like it is?
 
  • #10
The orbit occurs because the speed is enough to ensure it doesn't fall towards the sun but not enough to fly away.

It isn't the centrifugal force.

As the planet orbits, it is falling towards the sun. But because of the speed it is orbiting at it constantly misses.
 

Similar threads

Undergrad Is this analogy between Magnetic Force and Gravitational Force accurate in helping to understand what contributes more to a stronger magnetic force?
  • · Replies 11 ·
Replies
11
Views
2K
High School Magnetic fields attracting two disc-shaped magnets
  • · Replies 11 ·
Replies
11
Views
3K
High School How Much Energy is Stored in Earth's Magnetic Field?
  • · Replies 2 ·
Replies
2
Views
2K
High School Magnet inside a solenoid with current
  • · Replies 7 ·
Replies
7
Views
2K
Undergrad Charge movement relative to magnetic field frame dependence/invariance
  • · Replies 5 ·
Replies
5
Views
2K
High School Is the Direction of Magnetic Fields Truly Conventional?
  • · Replies 6 ·
Replies
6
Views
2K
High School Experiment issues (electromagnetism)
  • · Replies 42 ·
2
Replies
42
Views
3K
Undergrad Magnetic field strength of a stack of magnets
  • · Replies 7 ·
Replies
7
Views
4K
High School Force Exerted on a Conductor by a Homogeneous Magnetic Field
  • · Replies 1 ·
Replies
1
Views
2K
High School What magnetic fields can this hollow rod shield?
  • · Replies 13 ·
Replies
13
Views
2K