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Rolling down a ramp - find acceleration

  1. Apr 15, 2013 #1
    2eyud5j.png

    Here are the few equations i set up... which ultimately led to a wrong answer.
    (In my solution, subscripts A refers to the ramp, B refers to the rolling pipe)

    1ilhr8.jpg

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    I have a feeling that the acceleration if pipe A isn't simply downwards at 30deg.
    Cos the ramp is rolling away, so the angle is relative to the ramp.

    But I have no idea how to set up the required equations to correct this.
    Any pointers?
     
  2. jcsd
  3. Apr 15, 2013 #2

    tiny-tim

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    hi serverxeon! :smile:
    relative accelerations are vectors (like relative velocities or relative positions), and so they add like vectors :wink:
     
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