Understanding the Effects of Black Holes on Mass and Gravity

  • Context: Graduate 
  • Thread starter Thread starter Physik
  • Start date Start date
  • Tags Tags
    Black hole Hole
Click For Summary

Discussion Overview

The discussion revolves around the effects of black holes on mass and gravity, specifically addressing whether objects falling into black holes lose mass or contribute to the black hole's mass. The scope includes theoretical considerations and interpretations of relativistic effects and quantum mechanics.

Discussion Character

  • Debate/contested, Conceptual clarification, Technical explanation

Main Points Raised

  • One participant questions if the mass of an object falling into a black hole decreases or disappears, suggesting a relationship between speed and mass.
  • Another participant asserts that anything falling into a black hole simply increases the mass of the black hole.
  • A subsequent post clarifies that the object retains its mass while falling into the black hole.
  • One participant confirms that there is no mass loss, noting that relativistic mass increases due to gravitational acceleration.
  • Another participant introduces the idea that when particle pairs fall into a black hole, positive energy converts to negative energy, potentially decreasing the black hole's mass, while also suggesting that mass is released as radiation.
  • A later reply references the quantum mechanical explanation for Hawking radiation, indicating a different perspective on the energy dynamics involved.

Areas of Agreement / Disagreement

Participants express differing views on whether mass is lost or retained when objects fall into black holes, with no consensus reached on the implications of energy transformations related to black holes.

Contextual Notes

Some claims depend on interpretations of relativistic effects and quantum mechanics, which are not fully resolved in the discussion. The relationship between mass, energy, and black hole dynamics remains complex and is subject to varying interpretations.

Physik
Messages
24
Reaction score
0
I don't know much about the subject of BlackHoles, but could someone tell me if this is correct: "As a BlackHole sucks in an object the mass will either disappear or reduce significantly."

":" is a ratio

Object approaches Speed of Light : Positive Mass (or build up of mass as it approaches speed of light) = BlackHole's gravity (Slows object down) : Negative Mass (Mass is going away)
 
Last edited:
Astronomy news on Phys.org
Anything falling into a black hole simply increases the mass of the black hole.
 
No no, I'm asking if the object falling into the black hole will decrease in mass.

EDIT: or does the object just keep it's mass and fall into the black hole?
 
Last edited:
Correct. No mass loss. The relativistic mass increases due to gravitational acceleration
 
mathman said:
Anything falling into a black hole simply increases the mass of the black hole.
When a particle pair drop into black hole, the positive energy will turn into negative energy and vice-versa due to the strong gravity force of black hole. Thus, the negative energy drop into the black hole and decrease the energy of the black hole. According to E=mc^2, the mass of black hole will decrease, not increase. The mass of the particle drop into the black hole simply release into space through radiation. In another terms, it is something like recycle.
 
That is a dog of a different color. The quantum mechanical explanation for Hawking radiation is what you are describing.
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
869
  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 11 ·
Replies
11
Views
2K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 17 ·
Replies
17
Views
5K
  • · Replies 10 ·
Replies
10
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 5 ·
Replies
5
Views
3K
  • · Replies 11 ·
Replies
11
Views
2K
Replies
4
Views
3K