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Homework Help: Translational Motion

  1. Jul 6, 2008 #1
    1. The problem statement, all variables and given/known data

    I know the total frictional force required to stop a roller is 145 N, I know the frictional force required to decelerate rotary motion is Ia/r2. But I don't know the formula to decelerate translational motion of the roller. Help!

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Jul 6, 2008 #2


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    Deceleratin is just acceleration with a negative acceleration!
  4. Jul 6, 2008 #3


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    Welcome to PF!

    Hi Jane1948! Welcome to PF! :smile:

    (:wink: And happy 60th birthday? :wink:)

    What sort of roller is this?

    Is this a groundsman's roller, that works much like a wheelbarrow?

    If so, I don't see where the friction comes in, since rolling things (without slipping) shouldn't be slowed down by friction with the ground. :confused:
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