Two pendulums are balls of the same radius, suspended on threads of equal length. The masses of the balls are different. The oscillation of which of the pendulums will stop faster: light or heavy?
The resistance force acting on the vibrating balls depends on their diameter and speed, since the threads are the same, then the vibration frequency of the balls is the same, therefore, if at the beginning of the vibrations the balls are deflected at the same angle, then their speeds are equal at any time. The resistance forces acting on the balls are equal, but the inertness of a ball with a larger mass is greater, so it will oscillate longer.
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