Timeline for Do you weigh more with suction cups under your feet on the scale?
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 18, 2022 at 14:18 | comment | added | mmesser314 | I misread the problem. I thought you meant a flexible rubber cup that could be flattened onto the scale. Trying to pull it away creates a vacuum. That takes a lot of force, so they stick you to the scale. Not useful for sticking to a scale, but helpful for climbing a glass wall. You had in mind a non-flexible cup that you could pump down like a bell jar in a vacuum chamber. Rob's answer is right. | |
| Jul 18, 2022 at 10:10 | comment | added | matthias_buehlmann | but that's exactly what it is about when dealing with suction cups | |
| Jul 18, 2022 at 2:57 | comment | added | mmesser314 | I was ignoring issues like the weight of air. | |
| Jul 18, 2022 at 0:51 | comment | added | matthias_buehlmann | Well actually if the material of the suction cups was massless, the scales would indeed show a slightly smaller weight. Reason: Buoyancy. Since the person with the (massless) suction cups would have a larger volume and thus displace more air than the one without at equivalent mass, the first one would have greater buoyancy, which is an upwards force and thus the scales would measure a slightly smaller weight. | |
| Jul 18, 2022 at 0:14 | history | answered | mmesser314 | CC BY-SA 4.0 |