[Archive!] Pure mathematics, physics, chemistry, etc.: brain-training problems not related to trade in any way - page 413

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air as the driving force in this example is useless, replace flies with fleas, if not flying, it can definitely bounce ))))

 
sergeev:
Is that a snowman, the view from above?
is an attempt to show schematically how flies change their centre of gravity, their total fly mass
 
Leave the flies alone. You don't care about flies. Imagine you're in outer space in a spacesuit. There's no fuel in the engines. How do you move in space? There shouldn't be any jet propulsion. Is it possible to move without interaction? Without loss of mass? Solve this problem - create a grail by analogy.
 
Byte:

air as the driving force in this example is useless, replace flies with fleas, if not flying, it can definitely bounce ))))

The rotation of the flies will be opposite to the rotation of the air (this creates a support for them, at high speeds air has tangible density), and if the flies change their centre of gravity as shown in the figure, then movement is quite possible, but the speed must be awesome.
 
Richie:
Leave the flies alone. They are a pain in the ass. Imagine that you are in outer space in a spacesuit. There's no fuel in the engines. How do you move in space? There shouldn't be any jet propulsion. Is it possible to move without interaction? Without loss of mass?

NO



the forum can be closed, forex can be closed too.

As Math Math wrote - there is no grail, all believers go to hell.

 
Richie:
Leave the flies alone. You don't care about flies. Imagine you're in outer space in a spacesuit. There's no fuel in the engines. How do you move in space? There shouldn't be any jet propulsion. Is it possible to move without interaction? Without loss of mass? Solve this problem - create a grail by analogy.
Yes it is possible, due to solar wind, don't tell me there is no sun in space )
 

On the subject of spinning up to an awesome frequency. Counter question. What would be the weight of a body if it flew at 2nd space velocity within the Earth?

 
Richie:
On the subject of spinning up to an awesome frequency. Counter question. What would be the weight of a body if it flew at 2nd space velocity within the Earth?
weight or mass?
 
sergeev: weight or mass?
Exactly the weight.
 
It's not like the formula has been abolished. Newton's second law of motion.
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