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#841665
feivel
Participant

pegger

let me give it one more try

if you dont agree with the analysis we can leave it as a disagreement

indeed you stop spinning.

which has no effect on your tangential movement which is directly perpendicular to the direction of the force of gravity

you will continue to move in a linear 30k/s exactly as you did before due to there being no force to act to change your momentum. as you continue to move in a straight line tangential to the earth at 30k/s, the earth continues to move below you at a speed of 30k/s as before thus there being no change in your situation relative to tangential movement in relationship to the earth.

what does change is that as you say you are no longer spinning. what does that mean? it means that your ANGULAR VELOCITY is now null, you areno loner changing direction in concert with the earths angular velocity. your angular velocity has now become zero since the source of the centripital force has been removed.

but now the difference between your angular velocity (zero) and the earths angular velocity (a very small 1 revolution per 24 hours) and you will gradually rise away from the spot of earth below you as it continues to change direction, and you do not.

but as far as your tangential movement relative to the surface of the earth nothing has changed by the cessation of gravity. you are moving at 30k/s (as a result of your momentum which no force has altered, and the earth is moving under you at that same 30k/s just as before, as similarly no force has acted to change this.

you will slowly rise as the the earth spins and you are no longer spinning with it.

if you dont get it, try this thought experiment:

you lift yourself with a crane to 500 feet above the earth (the 500 feet-crane part of this isnt necessary but it might help to prevent certain misunderstandins) you are equipped with downward pointing thrusters exactly equal to the effect of gravity on you.

as the crane releases you, you turn on the thrusters. you have now eliminated all centripital force and are no longer “spinning with the earth” are you going to suddenly fly away at 1,000 miles per hour? of course not, but you will very slowly become more distant from the earth as the earth contues to turn.

feel free to submit your rebuttal but i quit, thanks for the interesting discussion