Homework Help: University Physics (Cal-Based)

Posted by Naaz on Thursday, December 11, 2008 at 4:41pm.

Calculate the velocity of a 20kg object that is dropped from a height h above the Earth, where h is very large compared to the radius of the Earth. The radius of the Earth is 6380 m and the mass is 5.94 x 10^24 kg.

University Physics (Cal-Based) - bobpursley, Thursday, December 11, 2008 at 6:54pm
I would do this as energy.

1/2 m v^2=work done=ind force*dh=INT GMe*m/(re+h)^2 dh integrating from intial height to Re. Then solve for v.

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