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MM_102924811-Visitor
1-Visitor
April 26, 2022
Question

Power Calculation

  • April 26, 2022
  • 2 replies
  • 1719 views

Having already discovered mathcad's rpm "unit" is radians per min and not rotations. I am having a new issue trying to figure out why I'm getting incorrect solutions for power.

c128a334-2e55-4538-ad89-9cc3a3810577.png Wrong

 

0c2dc48a-6c03-4fb0-b627-5c4fd9640817.png Correct

 

Thanks

 

    2 replies

    C
    ChrisKaswer16-Pearl
    16-Pearl
    April 26, 2022

    This form works fine in Prime 8:

    ChrisKaswer_0-1650990234630.png

     

      W
      Werner_E25-Diamond I
      25-Diamond I
      April 26, 2022

      Werner_E_0-1650990757336.png

       

      not sure where the  .58 in the calculator of your screenshot stem from. Must be a wrong or very inaccurate approximation of pi?

       

      EDIT: I just found the site with the calculator you used and it uses a factor 9.5488 which actually should be 60/(2 pi)=9.54929658...

        V
        24-Ruby IV
        ValeryOchkov24-Ruby IV
        24-Ruby IV
        April 28, 2022

        rev=2pi not 1

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