Mathematical and Physical Journal
for High Schools
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Problem P. 4709. (February 2015)

P. 4709. The mass of a uniform density plastic cube of edge 2 dm is 1.0 kg. The Young's modulus of its material is \(\displaystyle 10^7~\rm{N/m}^2\).

\(\displaystyle a)\) How much is this cube compressed if it is placed to a horizontal surface?

\(\displaystyle b)\) How much does the height of its centre of mass decrease?

(5 pont)

Deadline expired on March 10, 2015.


37 students sent a solution.
5 points:Balogh Menyhért, Berta Dénes, Blum Balázs, Csathó Botond, Forrai Botond, Holczer András, Kormányos Hanna Rebeka, Olosz Balázs, Sal Kristóf, Szentivánszki Soma .
4 points:Fekete Panna, Molnár 157 Marcell, Öreg Botond.
3 points:15 students.
2 points:2 students.
1 point:4 students.
0 point:3 students.

Problems in Physics of KöMaL, February 2015