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Hi guys, can anyone help explain why this doesn't work?

I tried whatever I could to find out what is the problem with no success.

Thanks.

Physics

Werner_EAnswer

25-Diamond I

Instead of substituting and working with a huge expression I would rather prefer to turn all expressions depending on the variable b into functions of b.

You can then use the "root" function by providing a range (values to the left and to the right of the root)

Or you can use the "root" function by providing a guess value

And of course you also could use a solve block with "find"

Prime 10 sheet attached

Werner_E

25-Diamond I

Why don't you attach your worksheet?

Delete the equal sign at the end of the definition of P.

But I don't think that Primes symbolics will be able to solve your equation. Furthermore it seems to me that your equations is in no way unit consistent!

You definition of P adds 2a ( a length) to b, so b must be a length, too, as will be P.

A is an area and so R is again a simple length.

So in your expression X, the left hand side (W) is defined as being an acceleration (m/s^2), but the right hand side would end up with units m^3 / s. So there seems to be something wrong with the units or with the expressions!

If you can fix the unit problem, it may be more appropriate to formulate your assignment as functions of b and then use a numeric method like the "root" function to get your numeric result for b.,

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