ch44_p33 - v 2 / r , where v is the speed of Earth, GMm r...

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33. (a) The mass M within Earth’s orbit is used to calculate the gravitational force on Earth. If r is the radius of the orbit, R is the radius of the new Sun, and M S is the mass of the Sun, then M r R M s = F H G I K J = × × F H G I K J ×= × 3 11 12 3 30 25 150 10 590 10 1 9 91 0 3 2 71 0 . . .. . m m kg kg c h The gravitational force on Earth is given by GMm r 2 , where
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Unformatted text preview: v 2 / r , where v is the speed of Earth, GMm r mv r 2 2 = and v GM r = = = 6 67 10 327 10 150 10 121 10 11 2 25 11 2 . . . . . m s kg kg m m s 3 c hc h (b) The ratio is 2 4 1.21 10 m s 0.00406. 2.98 10 m s = (c) The period of revolution is T r v = = = = 2 2 150 10 121 10 7 82 10 248 11 2 9 . . . . m m s s y c h...
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This note was uploaded on 01/23/2011 for the course PHYSICS 17029 taught by Professor Rebello,nobels during the Fall '10 term at Kansas State University.

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