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Homework Help: Finding acceleration of a block on the way down an incline

  1. Nov 15, 2015 #1
    1. The problem statement, all variables and given/known data
    Find acceleration of block on the way down incline.
    The incline is 40 degrees and made of steel. The block is also made of steel.
    μs = 0.6
    μk = 0.3
    mass of block = 2.00 kg

    2. Relevant equations
    a = g (sinθ - μcosθ)
    a = F/m

    3. The attempt at a solution
    My friend is getting 4.04 somehow. When I plug the numbers in, using the coefficient of kinetic friction, I get 9.26.
    Last edited: Nov 15, 2015
  2. jcsd
  3. Nov 15, 2015 #2


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    Science Advisor
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    Gold Member

    First set your calculator to degrees instead of radians. Where are your equations coming from? Which is correctt and why?
  4. Nov 15, 2015 #3
    lol well that's embarassing. Thanks, I would've been working on that for hours. I got it now
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