Thank you very much wrobel for your answer. I really like your suggestion to use an energy approach. I'm really glad you suggest this formula. I never thought to write velocity like you did, and it was under my eyes for so long.
$$|v|^2=\dot x^2+(f'(x)\dot x)^2$$
Regarding the acceleration, I...
Hello to everyone :smile:
I'd like to study this problem.
You have a 2D guide, described by an equation y = y (x) in a reference interval x ∈ I = [a, b], placed in a cartesian vertical plane Oxy.
The guide is frictionless and the only force that is acting is the gravity force.
On this track, a...