Physics Help Forum find weight in space when mass is given

 Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

 Oct 26th 2009, 10:13 PM #1 Junior Member   Join Date: Oct 2009 Posts: 9 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
 Oct 26th 2009, 10:53 PM #2 Senior Member   Join Date: Sep 2009 Location: india Posts: 409 in space when there are no planets nearby, there is no attraction due to gravity. so weight will be zero.i agree with you.
 Oct 26th 2009, 11:00 PM #3 Junior Member   Join Date: Oct 2009 Posts: 9 AH it definitely is zero! sorry for wasting your time lol it just made me really unsure :P thanks regardless!!

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