Mathematical and Physical Journal
for High Schools
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Problem P. 4129. (January 2009)

P. 4129. The bob of a simple pendulum is displaced and then released. What can be the greatest angle of displacement, if the maximum force exerted by the thread is twice the weight of the bob, and the thread is not to be broken?

(4 pont)

Deadline expired on February 11, 2009.


165 students sent a solution.
4 points:142 students.
3 points:2 students.
2 points:10 students.
1 point:4 students.
0 point:2 students.
Unfair, not evaluated:5 solutions.

Problems in Physics of KöMaL, January 2009