problem12_58

University Physics with Modern Physics with Mastering Physics (11th Edition)

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12.58: (a) Get radius of ( 29 km 850 , 18 2 : X 4 1 = R π m 10 1.20 R 7 × = Astronant mass: kg 2 . 96 2 s m 9.80 N 943 = = = g m ϖ Use astronant at north pole to get mass of X: kg 10 05 . 2 ) kg 2 . 96 )( kg Nm 10 67 . 6 ( ) m 10 20 . 1 )( N 915 ( : 25 2 2 11 2 7 2 x x x 2 x × = × × = = = = - Gm R mg M mg R GmM ma F Apply Newton’s second law to astronant on a scale at the equator of X. ( 29 day one is which hr, 36 . 7 s 3600 hr 1 s 10 65 . 2 ) m 10 20 . 1 )( kg 2 . 96 ( 4 N 850.0 N 0 . 915 4 2 : 4 2 7 2 2 2 2 2 scale grav 2 scale grav = × = × = - = = - = = - = T T T mR R m F F T R v R mv F F ma F R
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This document was uploaded on 02/05/2008.

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