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    logan1992's Avatar
    logan1992 Posts: 4, Reputation: 1
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    #1

    Oct 13, 2011, 04:09 PM
    What steps do I follow to solve this physics problem?
    An 90 kg satellite orbits a distant planet with a radius of 4000 km and a period of 280 min. From the radius and period, you calculate the satellite's acceleration to be 0.56 m/s^2. What is the gravitational force on the satellite?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 14, 2011, 01:29 AM
    I'm assuming that 4000 km is the radius of the orbit?

    At that instant, the force on the satellite is given by F = ma.

    This is your gravitational force.
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #3

    Oct 14, 2011, 06:52 AM
    The gravitational force is causing an acceleration of 0.56m/s^2. The satellite has a mass of 90 kg. All you need are those two pieces of information and Newton's second law (F=ma).
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #4

    Oct 14, 2011, 06:56 AM
    Sorry, Jerry. Once again I missed your answer because the stupid GO skin sometimes shows no answers, even though you had actually answered hours earlier.
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #5

    Oct 14, 2011, 06:59 AM
    It's okay, I know the frustration :)

    And the owners still don't want to admit that Go is not as good as it appears.
    logan1992's Avatar
    logan1992 Posts: 4, Reputation: 1
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    #6

    Oct 14, 2011, 12:42 PM
    Thank you so much!
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