Mathematical and Physical Journal
for High Schools
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Problem P. 3830. (October 2005)

P. 3830. A small engine, fixed to a vertical wall at a height of H, winds up a piece of thread with a constant speed of v0. At the other end of the thread there is a small body which moves along the horizontal ground (friction is not negligible). How far is the small body from the wall when it rises from the ground? Data: H=20 cm, v0=5 cm/s.

(5 pont)

Deadline expired on November 11, 2005.


Statistics:

44 students sent a solution.
5 points:Blázsik Zoltán, Bogár 560 Péter, Dudás János, Engedy Balázs, Győri Tamás Noé, Hullár Dávid, K. Gergely, Kacz Krisztián, Konczer József, Kónya 495 Gábor, Mándi Gábor, Máté István Mátyás, Nagy 224 Csaba, Nagy 317 Péter, Nyíri Dávid Ákos, Pásztor Attila, Pósa László, Széchenyi Gábor, Szilágyi Zsombor, Szolnoki Lénárd, Szük Dániel, Takátsy Balázs, Werner Miklós.
4 points:Demeter Dániel, Kőrösi Márton, Meszéna Balázs.
3 points:6 students.
2 points:1 student.
1 point:1 student.
0 point:9 students.
Unfair, not evaluated:1 solutions.

Problems in Physics of KöMaL, October 2005