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Max Force Applied?

  1. Sep 27, 2004 #1
    Im lost on this one & any help whatsoever would be more than appreciated.... Here is the problem...

    You have a block that weighs 70N that rests on a sled that weighs 60N. The coefficient of friction between the box & the sled is .700 & the coefficient of friction between the sled & the ground is .100. So what can the max force applied be before the top box slips?
  2. jcsd
  3. Sep 27, 2004 #2


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    Consider the sum of the forces acting on the combined system (sled and block) and then the sum of the forces acting on the block.
  4. Sep 28, 2004 #3
    Thanks.... Appreciate it...
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