6

Was Neil Armstrong the first one on the moon?

Brandon9000

1
Thu 1 Jan, 2015 12:24 pm
@Rickoshay75,
Rickoshay75 wrote:

Brandon9000 wrote:

Rickoshay75 wrote:
"A comparison of the diameters of the Earth and the Moon show the former has as diameter of 12,742 km (7,918 mi) and the latter has a diameter of only 3,476 km (2,160 mi).

http://planetfacts.org/how-big-is-the-moon-compared-to-earth/

Which equates into even less gravity pull and more reason to avoid a LEM imbalance of any kind.

If two spheres have the same density and radii in the ratio of 1/2, what is the ratio of their masses?

Our only way to find out the weight difference is to weigh one earth pound on the moon - actually observe the difference, not calculate or equate it..

No, we have one other way - apply physics which has been known for more than three centuries and is used routinely all around the world. The calculation you are referring to is routinely done in high school physics classes.

The formula is W = G m1 m2 /r^2

where G is the Cavendish gravitational constant, m1 and m2 are the mass of the object being weighed and of the planet, and r is the distance between the center of mass of the object being weighed and the center of the planet.

Are you now claiming that physics doesn't work? By the way, you never answered my question.
DNA Thumbs drive

1
Thu 1 Jan, 2015 12:37 pm
@Brandon9000,
It might work like this, if there were enough planets to test the hypothesis on. The formula is assuming that gravity is the same everywhere, and do we know this to be true, if we were under the influence of a sun that was 1000 times the size of ours?

Brandon9000

1
Thu 1 Jan, 2015 12:45 pm
@DNA Thumbs drive,
DNA Thumbs drive wrote:
It might work like this, if there were enough planets to test the hypothesis on. The formula is assuming that gravity is the same everywhere, and do we know this to be true, if we were under the influence of a sun that was 1000 times the size of ours?

I thought we were talking about someone's weight on the Moon. Now you're claiming that elementary physics used successfully in the classical realm for centuries is wrong, even in the classical realm? Shall I quote every basic physics equation so that you can tell me that each of them is baloney?
0 Replies

BillRM

1
Thu 1 Jan, 2015 12:45 pm
@DNA Thumbs drive,
Quote:
It might work like this, if there were enough planets to test the hypothesis on. The formula is assuming that gravity is the same everywhere, and do we know this to be true,

Where do you get such nonsense from as there have been zero indication that the constant G change either in time or in location.
0 Replies

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