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These units are not compatible

BB_14100646
10-Marble

These units are not compatible

I'm using MathCAD 9.0.0.0. I get this error on my last equation...

BB_14100646_0-1761248990975.png

I don't know what's off because all of these variables worked fine together up until this point. Initially the box was only around the first CDH until I added "explicit,ALL" so that might be something to look at.

 

Thanks,

      Brent

ACCEPTED SOLUTION

Accepted Solutions
Werner_E
25-Diamond I
(To:BB_14100646)


@BB_14100646 wrote:

I just realized I left out multiplication, so I added that, but am still getting an error.


No, you didn't!?

1) You should enable "Units/Constants in Symbolics" in the calculation options. In the first sheet you posted it was not enabled. That was the only difference between the two sheets I noticed.

2) looks like you forgot a factor in the second summand. CDH is just a scalar, all other summands are forces. Maybe the factor should be CD??

Werner_E_0-1761255386388.png

 

View solution in original post

3 REPLIES 3

I just realized I left out multiplication, so I added that, but am still getting an error.

Werner_E
25-Diamond I
(To:BB_14100646)


@BB_14100646 wrote:

I just realized I left out multiplication, so I added that, but am still getting an error.


No, you didn't!?

1) You should enable "Units/Constants in Symbolics" in the calculation options. In the first sheet you posted it was not enabled. That was the only difference between the two sheets I noticed.

2) looks like you forgot a factor in the second summand. CDH is just a scalar, all other summands are forces. Maybe the factor should be CD??

Werner_E_0-1761255386388.png

 

Thank you so much!

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