Mathematical and Physical Journal
for High Schools
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Problem P. 4157. (April 2009)

P. 4157. What is the least horizontal force which can turn over a cube which is on a horizontal tabletop? Examine the following three cases:

a\mu\approx0;

b\mu=0.2;

c\mu=1.

(5 pont)

Deadline expired on May 11, 2009.


Statistics:

73 students sent a solution.
5 points:Béres Bertold, Budafoki Richárd Gergely, Farkas Martin, Kaposvári István, Laczkó Zoltán Balázs, Szenczi Zoltán, Wang Daqian.
4 points:Batki Bálint, Egyed Zsombor, Emroz Khan, Illés Dorottya, Mayer Martin János, Nagy 111 Miklós, Najbauer Eszter Éva, Schwarcz Gergő, Somogyi József, Virágh Eszter.
3 points:28 students.
2 points:2 students.
1 point:11 students.
0 point:7 students.
Unfair, not evaluated:8 solutions.

Problems in Physics of KöMaL, April 2009