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Homework Help: Mass supported by two strings

  1. Nov 13, 2011 #1
    1. The problem statement, all variables and given/known data
    A mass of 17kg is supported statically by two strings. T2 has a magnitude of 150N at β=45° to the right of the vertical. (a)Calculate the vector T1. (b) If T2 was acting vertically downwards with the same magnitude as in (a) calculate T1.

    2. Relevant equations

    3. The attempt at a solution
    I calculated T1 for the first part and found it to be 122.1N at 60.31° to the left of the vertical. I'm not sure how to do the second part.
  2. jcsd
  3. Nov 13, 2011 #2
    I got the same answers for part 1 as you did.
    If T2 is acting vertically downwards with a tension of 150N then it seems to me that T1 must be acting vertically upwards if these are 2 STRINGS supporting a mass !
  4. Nov 13, 2011 #3
    I'm still not sure how you go about solving for T1 then.
  5. Nov 13, 2011 #4
    I would say that T1 is now providing the upwards force to hold the 17kg mass plus the 150N downwards force caused by T2
    So (9.81 x 17) + 150
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