Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem M. 332. (April 2013)

M. 332. Fix a piece of thin flexible steel sheet (for example the blade of a knife or a saw) into a vise, such that at most 10 cm long part of it sticks out of the jaws of the vise. The end of the blade which sticks out can be round or pointed, it is not necessary to use a rectangular blade. Pluck the part of the blade which sticks out. Measure how the frequency f of the plucked blade (the pitch of the emitted sound) depends on the length of the midline of the oscillating part of the blade.

(6 pont)

Deadline expired on May 10, 2013.


23 students sent a solution.
6 points:Asztalos Bogdán, Garai Zoltán, Holczer András, Horicsányi Attila, Kollarics Sándor, Nagy Gergely, Olosz Balázs, Szabó 928 Attila.
5 points:Agócs Fruzsina, Dombai Tamás, Domonkos Márk, Juhász Péter.
4 points:3 students.
3 points:4 students.
2 points:1 student.
1 point:2 students.
0 point:1 student.

Problems in Physics of KöMaL, April 2013