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Unit when multiplied or squared

  1. Jun 11, 2015 #1
    1. The problem statement, all variables and given/known data

    Consider the following hypothetical question:

    (5 lbs•m^2) =a
    (5 rad/s^2) =b

    If (a) and (b) are each multiplied by 2 what do the units become?

    Similarly if (a) and (b) are squared what do the units become ?
     
  2. jcsd
  3. Jun 11, 2015 #2

    SteamKing

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    If you have a square which measures one meter on a side, what is the length of the sides of the square if you double that distance?

    If a square measures 1 meter on a side, what is the area of the square? If a cube measures 1 meter on a side, what is its volume?

    BTW, its not clear what kind of unit the lbs-m2 is. Is that supposed to be "pounds-mass" or "pounds-meter"?

    Generally, it's not cool to use a mixture of units from different measurement systems.
     
  4. Jun 11, 2015 #3
    Thanks for your reply! I don't think I was specific enough here, My question worded differently would be ;

    if Mass^2 = kg^2

    What would (mass^2 multiplied by 2)
    = in its units?

    Do the units change or remain the same.
    I know this is a very silly question!
     
  5. Jun 11, 2015 #4

    SteamKing

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    Are you talking about squaring units of mass2, or are you talking about multiplication of units of mass2 by a constant value (for example, 2)?

    Either way, the answer should be self-evident.
     
  6. Jun 11, 2015 #5

    Evo

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    Where is your attempt at solving this yourself?
     
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