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Old Oct 26th 2009, 10:13 PM   #1
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find weight in space when mass is given

A space traveler whose mass is 108 kg leaves earth. What are his (a) weight and (b) mass on earth and (c) weight and (d) mass in interplanetary space where there are no nearby planetary objects?

I know mass is the same so b) and d) are 108 kg
i know gravity constant on earth so W = 1.06 E 3

But i didn't know how to go about the weight when there isn't a distance from earth or other masses or anything!
If Fg = GMm / r^2
and the only known is G and m, that can't work.
If i assume no gravity for F = mg, is it zero?

please help
Thanks in advance
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Old Oct 26th 2009, 10:53 PM   #2
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in space when there are no planets nearby, there is no attraction due to gravity. so weight will be zero.i agree with you.
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Old Oct 26th 2009, 11:00 PM   #3
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AH it definitely is zero!
sorry for wasting your time lol it just made me really unsure :P
thanks regardless!!
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