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Homework Help: Friction physics problem help

  1. Jul 28, 2008 #1
    Q1
    http://img187.imageshack.us/img187/5202/f1xj9.th.png [Broken]

    M is on the point of sliding:
    0 = MA g - T => T = MA g .... (1)
    0 = T - (0.35)(150 g) .... (2)
    Substitute (1) into (2) : MA = (0.35)(150) = 52.5 kg.

    http://img187.imageshack.us/img187/787/f2co6.th.png [Broken]
    is the answer 398.5 kg?

    http://img187.imageshack.us/img187/5175/f3ix6.th.png [Broken]

    is the answer 189.5 kg?

    http://img179.imageshack.us/img179/8738/f4fv4.th.png [Broken]

    is the answer 36.5 N?
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Jul 29, 2008 #2
    Re: Friction

    I dont think the second one is correct. I stopped right here because it was tideous to do all the solutions just to check your answers. Post your way of solutions.
     
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