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Power Calculation

MM_10292481
1-Newbie

Power Calculation

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

 

3 REPLIES 3

This form works fine in Prime 8:

ChrisKaswer_0-1650990234630.png

 

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...

rev=2pi not 1

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