Are you ready for a challenge?
A group of physicists from the Institute of Physics in Belgrade and the Faculty of Physics of the University of Belgrade have launched a physics initiative aimed at high-school and freshman students who are passionate about this science. At the beginning of each month, a new challenge is published, and pupils and the youngest students can send their solutions and expect prizes for correctly solving tasks. The month of September has passed, and we are officially publishing the solution to the challenge. In the meantime, the October Monthly Physics Challenge have been published at IPB Monthly Physics Challenge.
Can you solve it?


