Pendant on a chain

See please Prime 6 sheet in attach.

One quastion - why I cannot solve the problem about fores by help function Find or lsolve?

Where is my errors?

Thanks!

PS
Mathcad 15 animation

25-Diamond I

Obviously a unit mismatch, as the error message says:
Are you sure about the units you applied to the constants in your matrix?

Author

24-Ruby IV

Thanks. I know it.

The questiob is why we have not correct solution with the Find and the lsolve function?

Is the system of equation wrong?

The correct direct solution:

Sign up