EvC Forum: Sun-Earth-Moon Gravity

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Topic: Sun-Earth-Moon Gravity

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Message 22 of 119 (363011)
11-10-2006 1:19 AM

Reply to: Message 11 by Taz
09-09-2006 3:34 PM

The Earth and the Moon together makes up one system (EM system). Now, think of EM as a single object. EM and the Sun makes up another system.

I'm guessing the same applies to solar systems too, which is why planets are not pulled (any more han stars) towards the centres of galaxies.

PS do galaxies also orbit each-other? And why don't moons have their own satelites etc etc ?

All the best

Human Evolution in 42 Steps

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	Message 11 by Taz, posted 09-09-2006 3:34 PM		Taz has replied

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Message 27 of 119 (363352)
11-12-2006 7:01 AM

Reply to: Message 24 by Taz
11-10-2006 1:01 PM

gasby writes:

This reminds me of the good ole days when I had to actually drop a bowling ball and a tennis ball at the same time from the top of a ladder in the lecture room to prove to some that heavier stuff don't fall faster.

Hooray for that experiment, and the imaginary one with the feather and heavy object falling together on the moon.

Altogether, this topic makes me wonder - does every piece of matter continuously fall, towards the rest of the universe's centre of gravity?

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Message 30 of 119 (363365)
11-12-2006 8:43 AM

Reply to: Message 28 by RAZD
11-12-2006 7:52 AM

Re: falling feathers

Aha - I imagined it was imaginary. Hooray for this real experiment!

I just realised my centre of gravity question was dumb. So does every piece of matter accelerate along a resultant force vector, one wonders.

Edited by AdminJar, : fix link coding

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