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Astronomy Picture of the Day - Solar System Ball Drop
APOD.NASA.gov ^
| 25 Aug, 2021
| Video Credit & Copyright: James O'Donoghue (JAXA) & Rami Mandow (Space Australia); Text: James O'Don
Posted on 08/25/2021 4:29:14 PM PDT by MtnClimber
Explanation: Does a ball drop faster on Earth, Jupiter, or Uranus? The featured animation shows a ball dropping from one kilometer high toward the surfaces of famous solar system bodies, assuming no air resistance. The force of gravity depends on the mass of the attracting object, with higher masses pulling down with greater forces. But gravitational force also depends on distance from the center of gravity, with shorter distances causing the ball to drop faster. Combining both mass and distance, it might be surprising to see that Uranus pulls the ball down slightly slower than Earth, despite containing over 14 times more mass. This happens because Uranus has a much lower density, which puts its cloud tops further away from its center of mass. Although the falling ball always speeds up, if you were on the ball you would not feel this acceleration because you would be in free-fall. Of the three planets mentioned, the video demonstrates a ball drops even faster on Jupiter than either Earth and Uranus.
TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: nasa
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Today's image is a video at the link.
2
posted on
08/25/2021 4:30:09 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
Is this like Rockin’ New Years Eve?
3
posted on
08/25/2021 4:34:31 PM PDT
by
EvilCapitalist
(Pets are no substitute for children.)
To: All
It’s been a while since I was in school. I don’t remember the planet Ceres.
4
posted on
08/25/2021 4:45:41 PM PDT
by
BipolarBob
(Biden: "I did it but it's Trumps fault".)
To: EvilCapitalist
Is this like Rockin’ New Years Eve? Yes, except there are no mask mandates except some places on Earth.
5
posted on
08/25/2021 5:15:19 PM PDT
by
MtnClimber
(For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
To: MtnClimber
“Explanation: Does a ball drop faster on Earth, Jupiter, or Uranus?”
Depends on which game your’e playing.
Sorry, couldn’t resist.
6
posted on
08/25/2021 5:19:01 PM PDT
by
LastDayz
(A blunt and brazen Texan. I will not be assimilated.)
To: MtnClimber
If a mike drop happens does it make a sound?
7
posted on
08/25/2021 5:20:43 PM PDT
by
DannyTN
To: BipolarBob
Ceresiously? You don’t remember the planet Ceres?
Where do you think we get cereal from?
8
posted on
08/25/2021 5:22:05 PM PDT
by
DannyTN
To: BipolarBob
It’s a very cerreal place. They invented TV ceries there.
9
posted on
08/25/2021 5:23:30 PM PDT
by
DannyTN
To: LastDayz
“Does a ball drop faster on Earth, Jupiter, or Uranus?”
I bet Mare Pete could answer that.
10
posted on
08/25/2021 6:20:02 PM PDT
by
EvilCapitalist
(Pets are no substitute for children.)
To: EvilCapitalist
11
posted on
08/25/2021 7:53:59 PM PDT
by
null and void
(No jab/no job=only the compliant can work, they won't spread dangerous ideas around the workplace!)
To: LastDayz
12
posted on
08/26/2021 5:14:24 AM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: DannyTN
This is hugh and series.......................
13
posted on
08/26/2021 5:15:03 AM PDT
by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
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