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More net external forces

  1. Sep 25, 2007 #1
    Two lifeguards pull on ropes attached to a raft. If they pull in teh same direction, the raft experiences a net external force of 357 N to the right. If they pull in opposite directions the raft experiences a net external force of 127N to the left.

    A what is the magnitude of the larger of the two forces?

    B what is the magnitude of the smaller of the two forces?

    answer in units of N

    I tried doing F1=F2 = 357 and F1-F2 = -127

    and solved for F1 and F2

    F1= 115
    F2 = 242

    however those answers were incorrect... please help
     
  2. jcsd
  3. Sep 25, 2007 #2

    Astronuc

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    Staff: Mentor

    What is one checking against - book or on-line?
     
  4. Sep 25, 2007 #3

    learningphysics

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    Homework Helper

    Seems correct to me. Did you enter the answers with 242N as the larger and 115N as the smaller?
     
  5. Sep 25, 2007 #4
    yeah they were correct im dumb and entered them in for the wrong assignment GRRRR
     
  6. Sep 25, 2007 #5

    Astronuc

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    Staff: Mentor

    I was wondering about the order of the answers. One has to be careful with online tools.
     
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