Questions tagged [gravitational-force]
The gravitational-force tag has no usage guidance.
6
questions
8
votes
5
answers
2k
views
Does the escape velocity formula take into account how a gravitationally bound object's distance to its primary increases before coming back down?
Confusing title, I know. Imagine a perfect, homogenous sphere with an exact radius of $1,000 \text{km}$ and an exact mass of $8 \times 10^{15} \text{kg} $.
If you use the formula for escape velocity $...
- 2,579
5
votes
3
answers
2k
views
What is the force responsible for the output of whiteholes?
When we think of black holes and big celestial objects we think of objects being pulled towards them with a strong force. And that force turns out to be the gravitational force but then for the theory ...
- 317
4
votes
1
answer
574
views
Calculating net gravitational force on Uranus
I want to calculate the net/total gravitational force which is being exerted on the planet Uranus. There are many objects in our solar system like the Sun, other planets, moons of other planets, moons ...
- 949
3
votes
2
answers
217
views
Joseph Weber's aluminum cylinder
Joseph Weber used a massive aluminum cylinder and measured its deformation, in his attempt to detect gravitational waves. Why did he choose aluminium? Would a solid diamond deform as much as solid ...
- 309
2
votes
1
answer
348
views
Does a planets mass affect its gravitational pull? Let's say earth increased or decreased in mass could that theoretically affect gravity?
This was a random thought I had, and I can't seem to find any answers. I was thinking that if the Earth shrunk that could possibly cause an increase in ...
- 33
0
votes
0
answers
45
views
BH rotating at maximum speed and extremal BH
Academic problem:
What should be the rotational speed of a planet at the equator such as there is no surface gravity?
Plugging centripetal force=gravitational force...
$$mv^2/R=GMm/R^2$$
we get, ...
- 399