3 ms·
For a frictionless pendulum in a vacuum this is certainly true. The article repeatedly says they add weights to the pendulum though, which makes me wonder whet
by richmarr 11y ago
For a frictionless pendulum in a vacuum this is certainly true.
The article repeatedly says they add weights to the pendulum though, which makes me wonder whether either (a) it's some connected mechanism they add weights to, or (b) this is somewhere reality diverges from the simple model.
- deleted 11y ago[deleted]
- rtkwe 11y agohttps://youtu.be/5qEPDXDVxvw?t=169 https://youtu.be/5qEPDXDVxvw?t=169 They're added directly to the 'pendulum shelf' which looks like it's right at the top of the pendulum. That would adjust the length up (shorter) by a tiny amount by shifting the center of mass of the pendulum up. This squares with the simple model of a pendulum.
- joe5150 11y agoIt's true the weight and shape of the bob will have an effect on the air friction applied to the system, but for a pendulum of this scale, the effect of adding a coin or two will be a negligible change in drag compared to the relatively significant change in the pendulum's center of mass.