Крякающий стаканчик

We are investigating the sound that a cup with a thread attached to its bottom makes when you run wet fingers along the thread. This task was offered to participants of the 2025 Young Naturalists Tournament. Keywords: static friction, sliding friction, resonance. ------------------------------------------ Thank you for your interest in our work! You can get access to additional materials in our telegram channel: https://t.me/getaclass_channel If you like what we do, we will be very grateful for your support, we have collected all available and convenient tools for sending one-time donations and making subscriptions in one link: https://sponsorship.getaclass.ru ---------------------------- Novosibirsk State University Faculty of Physics https://www.nsu.ru/n/physics-department/