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KB_100741408-Gravel
8-Gravel
October 22, 2021
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Re: Solve equation with variables of different units

  • October 22, 2021
  • 2 replies
  • 1886 views

sir, as per this thread, can you help me with this equation, the unit of result according to my design code should be as Mpa (N/mm2).

 

ggggg.png

the Mathcad file is attached 

Best answer by Werner_E

Its always better to open a new thread for a question.

 

You are talking the square root of an value with unit MPa, so you cannot expect the result to have the unit MPa, too.
Rather it has to have to unit root of MPa, whatever that may be:

Werner_E_0-1634934932650.png

The formula you are using presumably is an empiric formula which is not unit consistent.
So one way to deal with is to divide the the values by its expected units and add the desired unit of the result at the end:

Werner_E_1-1634935056591.png

 

2 replies

W
Werner_E25-Diamond IAnswer
25-Diamond I
October 22, 2021

Its always better to open a new thread for a question.

 

You are talking the square root of an value with unit MPa, so you cannot expect the result to have the unit MPa, too.
Rather it has to have to unit root of MPa, whatever that may be:

Werner_E_0-1634934932650.png

The formula you are using presumably is an empiric formula which is not unit consistent.
So one way to deal with is to divide the the values by its expected units and add the desired unit of the result at the end:

Werner_E_1-1634935056591.png

 

    K
    KB_100741408-GravelAuthor
    8-Gravel
    October 23, 2021

    thank you, sir, for your help.

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