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Homework Help: Calculating the net force acting on object in diagram

  1. May 4, 2016 #1
    1. The problem statement, all variables and given/known data
    Calculate the net force acting on each object in the following diagrams. Show your work.

    upload_2016-5-4_15-14-44.png

    2. Relevant equations
    upload_2016-5-4_14-59-12.png

    upload_2016-5-4_14-59-33.png

    3. The attempt at a solution
    c2= a2 + b2 - 2abcosC
    c = (a2 + b2 - 2abcosC) 1/2

    c = [ (32.0 N)2 + (38.0 N)2 - 2 (32.0 N) x (38.0 N) cos 55° ] 1/2
    c = 32.8 N

    upload_2016-5-4_14-59-33.png

    sinA/ 38.0 N = sin55° / 32.8 N

    A= 72°

    Fnet = 32.8 N [ N 72° E]

    Can someone please check my answer and tell me if it is correct? Thanks.
     
  2. jcsd
  3. May 4, 2016 #2

    cnh1995

    User Avatar
    Homework Helper
    Gold Member

  4. May 4, 2016 #3
    Okay, thanks for linking that thread.
     
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