Also because the wedge is all the time on the floor, then you consider its center of mass potential energy like zero. If you want to take into consideration the dimensions of the wedge I think the problem would be much more complex. Hopefully this helps.
Thank you, teacher. Good explained!!!
Thanks
I don’t think u can do (m+M) for T of wedge.
Only small m
Yes@@dhwdue8769
I still don't understand why V(system) = -mgysin(α)
I get your point, you consider V(ball) like that because you take your initial reference point the initial height of the ball. Hopefully this helps.
Also because the wedge is all the time on the floor, then you consider its center of mass potential energy like zero. If you want to take into consideration the dimensions of the wedge I think the problem would be much more complex. Hopefully this helps.
Got it, thank you very much for the explanation :D