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How to rearrange this equation?

  1. Jul 9, 2013 #1
    How to rearrange this equation?
    apparently 1/M (F-μmg)=μmg/g
    goes to
    μ=F/(M+m)g
    but I dont see how please help
    i never learnt the simple maths and im paying for it now
     
  2. jcsd
  3. Jul 9, 2013 #2

    mfb

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    Staff: Mentor

    The first equation looks wrong - assuming this comes from physics, it has inconsistent units.
    My guess: 1/M (F-μmg)=μmg/m
    In that case, you can simplify the m/m on the right side, and multiply both sides with M afterwards.

    I guess the second equation should be μ=F/((M+m)g)? Better: ##\displaystyle \mu = \frac{F}{(M+m)g}##
     
  4. Jul 9, 2013 #3
    yes your right i wrote that wrong it should have been 1/M (F-μmg)=μmg/m.
    what do i do once i multiply both sides by M?
    I have μ on both sides and im solving for μ
     
  5. Jul 9, 2013 #4

    mfb

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    Staff: Mentor

    Bring both parts with μ on the same side, factor it out, and you are just one step away from the solution.
     
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