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Application of Newton's law

  1. Jul 24, 2017 #1
    1. The problem statement, all variables and given/known data
    After a mishap, a 76.0-kg circus performer clings to a
    trapeze, which is being pulled to the side by another circus
    artist, as shown here. Calculate the tension in the two ropes
    if the person is momentarily motionless. Include a free body diagram in your solution

    2. Relevant equations
    ∑Fx = T2cos10-T1sin(15)=0

    3. The attempt at a solution
    Here is my free body diagram:


    I am not sure are my equations valid.
  2. jcsd
  3. Jul 24, 2017 #2


    User Avatar

    Staff: Mentor

    Welcome to the PF. :smile:

    Looks good so far, so keep on going...
  4. Jul 24, 2017 #3
    Is it also valid if I calculate angle of T1 as 90 - 15 = 75 and write equations as:

    Σx = -T1cos(75) + T2cos(10) = 0
    Σy =T1sin(75) + T2sin(10) - m*g = 0
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