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Problem 3: Ring on the Rod

A washer on a vertical steel rod may start spinning instead of simply sliding down. Study the motion of the washer and investigate what determines the terminal velocity.

I. Phenomenon Demonstration

II. Books, Encyclopedia, Discussion and Forum Posts

III. Research Paper

  • Cross, Rod. “Rotating Ring on a Vertical Rod.” Physics Education 56, no. 2 (2021): 023003. https://doi.org/10.1088/1361-6552/abd992. https://iypt.ru/wp-content/uploads/2021/09/Rotating-ring-on-avertical.pdf
  • Jirandehi, Arash P, and Tajbakhsh N Chakherlou. “A Profound Study on the Effects of Friction Coefficient on …” Research Gate, September 2015. https://www.researchgate.net/publication/294874446_A_profound_study_on_the_effects_of_friction_coefficient_on_torque_tightened_longitudinally_loaded_bolted_connections.