Mathematical and Physical Journal
for High Schools
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Problem P. 4708. (February 2015)

P. 4708. A rectangle and a square shaped sheets are rotated about an axle through their centres, the axle is perpendicular to the plane of the sheets. The two sheets have the same mass, same width and the same density. One side of the rectangle is half of its other side. Which sheet has the greater rotational inertia? (It is not necessary to calculate the rotational inertias of the two objects separately.)

(4 pont)

Deadline expired on March 10, 2015.


Statistics:

49 students sent a solution.
4 points:Asztalos Bogdán, Babanics Gergely, Balogh Menyhért, Bartók Imre, Bege Áron, Bekes Nándor, Berta Dénes, Boldizsár Bálint, Bugár 123 Dávid, Csenger Géza, Fehér 169 Szilveszter, Fehér Balázs, Fekete Balázs Attila, Fekete Panna, Gergely 444 Kornél, Holczer András, Horváth Botond István, Kalmár Bendegúz, Koch Lilla, Kormányos Hanna Rebeka, Kovács Péter Tamás, Marosvári Kristóf, Molnár Elizabet, Nagy 555 Botond, Németh 017 András, Németh Flóra Boróka, Olosz Balázs, Öreg Botond, Sal Kristóf, Sallai Krisztina, Stein Ármin, Szántó Benedek, Szász Norbert Csaba, Tanner Martin, Tibay Álmos, Trócsányi Péter, Varga-Umbrich Eszter, Varju Ákos, Wiandt Péter.
3 points:Bősze Zsófia, Juhász 326 Dániel, Molnár 157 Marcell, Pázmán Előd, Vastag Balázs.
2 points:5 students.

Problems in Physics of KöMaL, February 2015