Mathematical and Physical Journal
for High Schools
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Problem P. 3796. (April 2005)

P. 3796. On a slope of height h a small body is sliding down without friction. It is connected to a point P at the bottom of the slope with a push-and-pull spring of an elastic constant of D, which was initially not extended. The body just stops at the bottom of the slope. What can the slope angle \alpha be? What is the acceleration when the body of mass m starts sliding back?

(5 pont)

Deadline expired on May 11, 2005.


Statistics:

89 students sent a solution.
5 points:Engedy Balázs, Farkas 621 György, Filep Tamás, Filus Tamás, Hidasi Balázs, Hotzi Bernadette, Kónya 495 Gábor, Mezei Bálint, Nagy 317 Péter, Pálinkás Csaba, Pásztor 001 Attila, Strenner Balázs, Széchenyi Gábor, Werner Miklós.
4 points:Berinkei Péter, Deák 666 Áron, Enczel Dávid, Fülöp Bálint, Gondán László, Gresits Iván, K. Gergely, Kunsági-Máté Éva, Lakomcsik Attila, Meszéna Balázs, Peregi Tamás, Sümegi Károly, Szalai Szilárd, Szirmai Péter.
3 points:29 students.
2 points:15 students.
1 point:8 students.
0 point:7 students.
Unfair, not evaluated:2 solutions.

Problems in Physics of KöMaL, April 2005