Recent content by F1ght4h0n0uR

Thank you so much, I see it after posting thread.

I'm having promblem with b. I checked the solution, but I did'nt understand the logic. Kf+Ugf+Usf = Ki+Ugi+Usi Usf= 0, Ki=0, Ugf= 0 I understand the logic's why they are equal to 0. I don't understand why final potential of spring (Usf) is equal to zero? ------------------ Now, I got...