There is no Creo Mechanica that I know of; it's just had a name change: Pro/Mechanica became Creo Simulate. Not sure what happened - did you start Mechanica in Independent mode?
If you're looking for non-linear results then you'll have to run some form of non-linear analysis. In this case, I think you'll have to enable Large Displacement Analysis (LDA) (within Static Analysis).
I can't remember whether you can create a ramped force application - look for a button with an "f(x)" symbol. You can create a measure for the displacement at the tip, and then in results you should be able to choose 'graph' as the display type.
HTH...