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Re: space jump skydiver
Posted: Mon Oct 15, 2012 11:34 am
by mr rusty
Not if all you are trying to put into pace is a small satalite
...simple Newtonian mechanics is the reason- for an object to remain in orbit it needs to be at a rate constant freefall which balances it's forward momentum against the pull of gravity. As the awesone Felix demonstrated gravity is just as strong up there as it is down here...that's why he fell straight down. It's a common misconception that there's no gravity up there- when you see astronauts floating around in the spacecraft it's because they're actually falling at the same speed as the spacecraft, but in an orbital pattern . Einstein explained it well with the lift - if a lift falls to earth in a tower block, everything in that lift will be falling at the same rate, so the people in the lift will experience zero G as they are falling at the same constant one G as the box they're in, their only frame of reference, and they will feel weightless.....but they won't be....thud! So.......for a satellite to remain in orbit, it needs a push, at a precise angle and speed, which only a rocket can provide! Simple!
Re: space jump skydiver
Posted: Mon Oct 15, 2012 6:49 pm
by rich.
mr rusty wrote:Not if all you are trying to put into pace is a small satalite
...simple Newtonian mechanics is the reason- for an object to remain in orbit it needs to be at a rate constant freefall which balances it's forward momentum against the pull of gravity. As the awesone Felix demonstrated gravity is just as strong up there as it is down here...that's why he fell straight down. It's a common misconception that there's no gravity up there- when you see astronauts floating around in the spacecraft it's because they're actually falling at the same speed as the spacecraft, but in an orbital pattern . Einstein explained it well with the lift - if a lift falls to earth in a tower block, everything in that lift will be falling at the same rate, so the people in the lift will experience zero G as they are falling at the same constant one G as the box they're in, their only frame of reference, and they will feel weightless.....but they won't be....thud! So.......for a satellite to remain in orbit, it needs a push, at a precise angle and speed, which only a rocket can provide! Simple!
are you a teacher? im trying to teach my 3 yr old some basic science so when she grows up she can be a rocket scientist... or as emily says wocket wocket wocket.. makes me proud
