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Newton physics help

  1. Oct 20, 2004 #1
    a small button is placed on a horizontal rotating platform with diameter 0.320m will revolve with the platform when it is brought up to a speed of 40.0 rev/min, provided the button is no more that 0150m from the axis. what is the the coefficient of static friction between the button and the platform.

    how far from the axis can the button be placed without slipping.if the platform rotates at 60.0 revs /min
  2. jcsd
  3. Oct 20, 2004 #2


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    What have you tried so far?
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