Discussion Overview
The discussion revolves around the gravitational properties of black holes, particularly how their gravitational force changes as they accumulate mass. Participants explore concepts related to gravitational force, mass retention, and the Schwarzschild radius in the context of black holes.
Discussion Character
- Exploratory
- Technical explanation
- Conceptual clarification
- Debate/contested
Main Points Raised
- Some participants propose that a black hole's gravitational force is equivalent to that of the original star before its collapse, while others argue that it increases as the black hole consumes more matter.
- It is noted that a black hole retains mass, angular momentum, and electric charge from the matter it consumes, suggesting that its gravitational force would increase accordingly.
- One participant clarifies that the gravitational pull from a black hole depends solely on its mass, and that consuming infalling matter will increase its gravitational force.
- Another participant mentions that if the sun were to become a black hole, the gravitational effects on the orbits of the planets would remain unchanged, as the mass would be conserved.
- A participant expresses confusion regarding the relationship between mass and Schwarzschild radius, specifically why a 10-solar mass black hole has a radius only three times larger than a 3-solar mass black hole.
- The formula for the Schwarzschild radius is provided, indicating that it scales with mass, but the implications of this scaling are not fully resolved in the discussion.
Areas of Agreement / Disagreement
Participants express differing views on how gravitational force relates to mass accumulation in black holes, with some asserting that it increases while others reference the gravitational equivalence to the original star's mass. The discussion on the Schwarzschild radius also indicates some confusion and lack of consensus on the implications of mass scaling.
Contextual Notes
There are unresolved questions regarding the implications of mass conservation and gravitational force in black holes, as well as the specific scaling of the Schwarzschild radius in relation to mass. Participants do not fully clarify these points, leaving some assumptions and definitions unaddressed.