Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem K. 801. (February 2024)

K. 801. Each of the two pots in the figure below have the shape of a letter. On the other diagram the side view of the pots can be seen, placed before a square lattice with a side length of 10 cm. The pots are open from above, and they spread 10 cm to the back. We place small rubber tubes in each pot that touch the bottom of the pots, and fill them with water. Both pots are filled up at the speed of 1 liter per minute. Find the time required to fill each pot. Plot the graph of the height of the water in each pot as a function of the time elapsed. (Ignore the thickness of the dishes' wall.)

(5 pont)

Deadline expired on March 11, 2024.


Sorry, the solution is available only in Hungarian. Google translation

Megoldás. A befolyó víz egy perc alatt az oldalnézeti ábrákon egy kis négyzetnek megfelelő térfogatot tölt meg. Mindkét betű 13 perc alatt telik meg.

A grafikonok az alábbi ábrákon láthatók.

E betű

T betű


Statistics:

71 students sent a solution.
5 points:Araguas Mátyás, Chen Peidong, Csáki Anikó, Fülöp Magdaléna, Gárdonyi Zsolt, Gáti Benjamin, Hajnal Ákos Huba, Juhász Zsombor, Kámán-Gausz Péter, Kapiller Ákos Péter, Kubica Ádám, Máté Kristóf, Németh Ábel, Olajos Anna, Pázmándi Renáta , Péterfia Kamilla, Roszik Szabolcs, Sajó Marcell 16, Szabó Máté, Szalóki Árpád, Szedmák Szabrina, Tamás Attila Gábor, Tóth Bálint Levente, Viczián Adél, Zámolyi Norbert.
4 points:Dóry Johanna, Némethy Márk, Ördög Dominik, Piller Zsófia, Timár Vince .
3 points:4 students.
2 points:3 students.
1 point:6 students.
Not shown because of missing birth date or parental permission:28 solutions.

Problems in Mathematics of KöMaL, February 2024