- #1
Pengwuino
Gold Member
- 5,123
- 20
Something I've always wondered is why does it feel like work is being done when you're just holding something up. According to the definition of work, 0 work is being done if no displacement occurs... but no one can say with a straight face that you aren't doing some form of work somewhere when you hold a 100lb bag up or something. Maybe this is a biology question but where exactly is energy being consumed/used when a human being holds something up in the same position? Or is it even possibly just a mental trick that it feels like some work is being done (maybe its just neurological signals)?