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

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12.22: a) From Example 12.4 the mass of the lander is 4000 kg. Assuming Phobos to be spherical, its mass in terms of its density , ) 3 4 ( is radius and 3 ρR R ρ π and so the gravitational force is N. 27 ) m 10 12 )( m
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Unformatted text preview: kg 2000 )( kg 4000 )( 3 4 ( ) kg 4000 )( 3 4 ( 3 3 2 3 = × = π ρ G R R G b) The force calculated in part (a) is much less than the force exerted by Mars in Example 12.4....
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