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January 26, 2015

January 26, 2015

Posted by **Leila** on Sunday, May 20, 2012 at 4:29pm.

- Physics -
**Damon**, Sunday, May 20, 2012 at 6:21pmF = G Mearth Mshuttle /r^2

G , Mearth and Mshuttle are the same

so

F r^2 = same

F1 r1^2 = F2 r2^2

F2 = F1 r1^2/r2^2

F1 = 1.7*10^7

r1 = 350*10^3 + 6.38*10^6 = 6.73*10^6 meters

r2 = 90*10^3 + 6.38*10^6 = 6.47*10^6 meters

so

F2 = 1.7*10^7 (6.73/6.47)^2

= 1.7 *10^7 * 1.082

= 1.84 * 10^7 Newtons

Newton's third law applies o the second part of the question.

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