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Calculating rate of change of momentum for a package

  1. Mar 31, 2014 #1
    A helicopter is flying to the right (in the +x direction) with a constant speed v, carrying a package of mass M suspended below it using a cable as shown in the figure (you can assume that H and L are not changing with time).

    Choose the package as your system. What is its rate of change of momentum?
    nRbKWif.png






    So, what I figured out is to calculate the angle between the string and the package using H and L. I draw a triangle and find the angle using tanx = H/L, then x = arctan(H/L)

    After I get the angle I can resolve to find the resultant force. But how do I get the rate of change of momentum with that?
     
  2. jcsd
  3. Mar 31, 2014 #2

    Simon Bridge

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    What speed is the package doing?
    Is the package accelerating?
     
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