Just a simple 3 -D statics problem worked using Mathcad vectors. If you can get students comfortable with vector arithmetic this form of the solution can save time and confusion.
open prime 2, go to getting started, go to migration guide, follow the instructions. Warning - the result will probably not be pretty, I use "insert math region" alot in my docs and prime 2 does not accept it. You would be better to leave it in 15
Since the instructions start with loading Mathcad 15 anyway, I took your advice and left your file in 15.
Well done example! I look forward to going through it in detail!