All Questions
Tagged with newtonian-gravity planets
311
questions
96
votes
4
answers
13k
views
If Earth had rings?
If Earth had rings, would they center on the equator like Saturn's rings do on its equator?
- 1
72
votes
5
answers
12k
views
Is there a small enough planet or asteroid you can orbit by jumping?
I just had this idea of orbiting a planet just by jumping and then flying upon it on its orbit kind of like superman. So,
Would it be theoretically possible or is there a chance of that small body to ...
- 963
60
votes
4
answers
142k
views
How does gravity work underground?
Would the effect of gravity on me change if I were to dig a very deep hole and stand in it? If so, how would it change? Am I more likely to be pulled downwards, or pulled towards the edges of the hole?...
- 703
43
votes
8
answers
85k
views
If the gravity at the center of the Earth is zero, why are heavy elements like iron there?
If gravity is zero at the center of the earth, why is there a core of heavy elements, such as iron?
Alternate question for the opposite hypothesis:
If gravity is greatest at the center of the earth,...
- 449
39
votes
12
answers
13k
views
If gravity disappeared, would Newton's third law make everything that was pressed to the ground by gravity get pushed upwards? [closed]
If gravity disappeared, would Newton's third law make everything that was pressed to the ground by gravity get pushed upwards?
- 545
39
votes
5
answers
34k
views
Would you be weightless at the center of the Earth?
If you could travel to the center of the Earth (or any planet), would you be weightless there?
- 543
39
votes
6
answers
91k
views
Why don't planets have Circular orbits?
This might be a completely wrong question, but this is bothering me since many days ago. Given the mass (Sun) curves the space around it, gravitation is the result of such curved space (Correct me if ...
- 525
33
votes
6
answers
7k
views
Does bottle water rise a little bit on full moon days?
High tides and low tides are caused by the Moon. The Moon's
gravitational pull generates something called the tidal force. The
tidal force causes Earth—and its water—to bulge out on the side
closest ...
user218113
33
votes
3
answers
12k
views
Why does the Moon face Earth with the same side?
I know that the rotation period of the moon equals its revolution period. It's just so astonishing that these 2 values have such a small difference. I mean, what is the probability of these 2 values ...
- 495
27
votes
6
answers
16k
views
Does gravity get stronger the higher up you are on a mountain?
So I saw this article stating that gravity is stronger on the top on the mountain due to there being more mass under you however I have read some questions other people have asked and most of the ...
25
votes
9
answers
28k
views
Why are orbits elliptical? [duplicate]
Almost all of the orbits of planets and other celestial bodies are elliptical, not circular.
Is this due to gravitational pull by other nearby massive bodies?
If this was the case a two body system ...
- 1,374
22
votes
8
answers
5k
views
For Newton's gravitation equation, how do you account for planet size?
My daughter was doing a physics problem where she had to calculate the gravitational force of an object that was 250 km above the earth... She used the equation:
$$F=\frac{G\cdot m_1 \cdot m_2}{r^2}$$...
- 323
22
votes
3
answers
7k
views
Gravity on a doughnut-shaped/Möbius planet
How different would the effects of gravity be if the planet we're on is in the shape of a torus (doughnut-shaped)?
For an (approximately) spherical planet, it's slightly clear that objects would tend ...
user172
20
votes
5
answers
136k
views
Why is Earth's gravity stronger at the poles?
Many sources state that the Earth's gravity is stronger at the poles than the equator for two reasons:
The centrifugal "force" cancels out the gravitational force minimally, more so at the equator ...
- 517
19
votes
3
answers
4k
views
If it was possible to dig a hole that went from one side of the Earth to the other...
...And you jumped in.
What would happen when you got to the middle of the Earth? Would you gradually slow down, until you got to the middle and once you were in middle would every direction feel like ...
- 387