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Might as well Jump....

Are they proposing to move the Earth into a higher orbit around the Sun? how much energy would it require to make an appreciable difference?

And what about conservation of momentum? Unless the jumping people achieve escape velocity, they wouldn't actually leave the planet, so I don't see how they can effect the velocity of the whole (planet+people) system.
 
Mojo said:
Are they proposing to move the Earth into a higher orbit around the Sun? how much energy would it require to make an appreciable difference?

And what about conservation of momentum? Unless the jumping people achieve escape velocity, they wouldn't actually leave the planet, so I don't see how they can effect the velocity of the whole (planet+people) system.
Click to expand...

The Bad Astronomer had this to say about it.

It's a case of trying to lift yourself by your own bootstraps. Jumping pushes the planet away from you with the same force that you are pushing away from the planet. Once you reach the apex of your jump, gravity pulls you both back together. Net effect: zero.

That and nobody seems to be able to find anything about Dr. Hans Peter Niesward.

There's also this and this.
 
tsg said:
It's a case of trying to lift yourself by your own bootstraps. Jumping pushes the planet away from you with the same force that you are pushing away from the planet. Once you reach the apex of your jump, gravity pulls you both back together. Net effect: zero.
Click to expand...
Yup, that's what I thought.
 
tsg said:
The Bad Astronomer had this to say about it.

It's a case of trying to lift yourself by your own bootstraps. Jumping pushes the planet away from you with the same force that you are pushing away from the planet. Once you reach the apex of your jump, gravity pulls you both back together. Net effect: zero.

That and nobody seems to be able to find anything about Dr. Hans Peter Niesward.

There's also this and this.
Click to expand...

there is the possibility, however, of actually hitting the Natural frequency of an oblate speroid of approximately 4000 mile radius, causing an undamped resonance and shaking the whole thing apart...
But I surmise the damping effect of the rocky surface floating on a molten core would suffice to prevent that.
Obviously, the earth was intellegently designed. (unlike the human knee):D
 
rwguinn said:
Obviously, the earth was intellegently designed. (unlike the human knee):D
Click to expand...
If I get to meet this designer, there are a few things I'll want to take up with him/her/it. Knees will certainly be one of them.

Actually, this makes me think of Spike Milligan's novel Puckoon, and the protagonist Dan Milligan's conversation with the author:
"Holy God! Wot are dese den?"
"Legs."
"Legs? Whose legs?"
"Yours."
"Mine? And who are you?"
"The Author."
"Author? Did you write these legs?"
"Yes."
"Well I don't like dem. I coulda writted better legs myself. Did you write your legs?"
"No."
"Ahh! Sooo! You got someone else to write your legs - and someone who's a good leg writer - and den you write dis pair of crappy legs fer me."
Click to expand...
 
Mojo said:
Are they proposing to move the Earth into a higher orbit around the Sun? how much energy would it require to make an appreciable difference?

And what about conservation of momentum? Unless the jumping people achieve escape velocity, they wouldn't actually leave the planet, so I don't see how they can effect the velocity of the whole (planet+people) system.
Click to expand...


Oh, stop being realistic :)

jj
 
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