Timeline for What's the reason that it requires less effort to walk against an escalator (to stay stationary) than walking up stairs?
Current License: CC BY-SA 4.0
2 events
| when toggle format | what | by | license | comment | |
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| Jun 16, 2022 at 8:10 | comment | added | user3635700 | The step machine is motorized and can be set to your preferred speed. I don't know what adjustable friction resistance is. | |
| Jun 14, 2022 at 16:35 | history | answered | Carl Witthoft | CC BY-SA 4.0 |