Posted by **Elizabeth** on Thursday, October 28, 2010 at 10:54pm.

Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg.

I know that 1/16 of Fg is the answer but I can't seem to find out what the Fg is.

- Physics -
**bobpursley**, Thursday, October 28, 2010 at 11:00pm
see other post.

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