Solve block square root equation error

[AM_10506871]

Can somebody please fix the error in the sheet attached? Solve block error

[MartinHanak]

Hi,

please publish the document you are using to create the Prime worksheet,

[AlanStevens]

Incompatible units.  d is a length (m), the other term under the square root sign is a force (N).

[Sergey]

Hello.

Your units are incompatible in the square root expression. 

I created second solve block based on your very first expression of M. This evaluates d_n.

[Werner_E]

Your worksheet is in Prime 11 format.

The worksheet of @AM_10506871  was in Prime 10 format, so chances are that he won't be able to open your sheet.

I, too, still stick to Prime 10 and so can't open your sheet, but I guess that what you suggested is similar to my second solve block.

[Sergey]

Yes, your second solve block is similar to mine.

I started to use Mathcad Prime 11 due to the "vec" function that vectorizes range variables. This command makes wonders 🙂

[AM_10506871]

can you show me an example of this one? I am new to mathcad just learning at the moment

[Sergey]

Do you mean vectorization? There asome "ainfull" ways to do it in Mathcad Prime 10.

Mathcad Prime 11 got a beatiful function clalled "vec". Example of using "vec" is given below (Mathcad Prime 11)

[vnamboodheri]

Hello AM_10506871,

It looks like you have some responses from some community members. If any of these replies helped you solve your question please mark the appropriate reply as the Accepted Solution. 

Of course, if you have more to share on your issue, please let the Community know so other community members can continue to help you.

Thanks,
Vivek N.
Community Moderation Team.

[Werner_E]

Additional error: You let the solve block look for variable d_n, but your equation is not using d_n at all. I only see a variable d.

Its also noticeable that the equation you show for reference (it has no effect for the calculations) at the top contains variable d_n as well as also variable d. Is this on purpose?

Or is

 just one length-variable (there is no multiplication dot in between) which later is just called gamma? Given the units I guess, no.

It also looks a bit strange that you get rid of the unit (MPa) only for f' but you leave the units unchanged for all other variables.

No idea if it makes sense but here are two solve blocks with modified equations which work.
The first one is a crude guess

The second one base on the reference equation at the top of your sheet:

Prime 10 worksheet attached

[AM_10506871]

Thank you

[Werner_E · Accepted solution]

So have you found the correct equation to solve?

If its the second attempt of the above two suggestions you have to consider that there is a second solution at about 1123 mm.