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Escape speed (T/F)

  1. Mar 8, 2009 #1
    1. The problem statement, all variables and given/known data

    Consider the motion of an object between a point close to the planet and a point very very far from the planet.
    Indicate whether the following statements are true or false

    Angular momentum about the center of the planet is conserved.

    2. Relevant equations

    ?

    3. The attempt at a solution

    I am not sure what is meant.

    I don't want to just guess. any help/hint.

    I would like to solve mathematically but also verbally as well.
     
  2. jcsd
  3. Mar 8, 2009 #2

    rl.bhat

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    The angular moment changes when a torque acts on a body. In this case, throughout the motion of the object the line of the force is passing though the center of the planet.
    Now, what is your conclusion?
     
  4. Mar 8, 2009 #3
    so its false?
     
  5. Mar 8, 2009 #4

    rl.bhat

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    No. It is true. Because there is no torque acting on the planet.
     
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