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September 30, 2014

Homework Help: physics

Posted by Sasha on Monday, October 26, 2009 at 10:03pm.

calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above Earth's surface if its mass is 1350 kg.

i know the universal gravitation formula is Fg = G [(m1 m2)/ r^2] but im not getting anywhere near the multiply choice answers of: 14,470, 4410 N, 2205 N, or 1470 N

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