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Finding the frictional force of a block

  1. Feb 13, 2008 #1
    Instead of answering all the questions being asked bfeore i make the topic, I'm just gonna show you a scan of what I'm being asked for:


    Basically, I got down the normal force, and Idk if made a mistake when i tried to find acceleration and overall tired myself out with this 1

    I just wanna know if i made a mistake calculating acceleration or if it's something else i have no idea about
  2. jcsd
  3. Feb 13, 2008 #2
    It depends on what the object is doing and how it's situated...are we on an incline? Maybe post your givens and what you've done so far.
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