Mathematical and Physical Journal
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Problem P. 4382. (November 2011)

P. 4382. The bob of a 2-m long pendulum undergoes circular motion in a horizontal plane. At most how long does it take to cover a complete circle?

(4 pont)

Deadline expired on December 12, 2011.

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

Megoldás. \(\displaystyle T\le 2\pi \sqrt{{\ell}/{g}}=2{,}83\) s.


127 students sent a solution.
4 points:82 students.
3 points:18 students.
2 points:10 students.
1 point:12 students.
0 point:5 students.

Problems in Physics of KöMaL, November 2011