3 ms·
Is that the case even for a (mythical and completely useless) frictionless pulley?
by TheLoneWolfling 12y ago
Is that the case even for a (mythical and completely useless) frictionless pulley?
- logfromblammo 12y agoWhether a frictionless pulley is useless or not depends largely upon whether you are using it to change the direction of the line, adding tension to it, or using it to perform work. Such a pulley is only useless for the latter, such as a belt turning a drum, but a frictionless block and tackle or tensioning pulley would be incredibly useful.
- TheLoneWolfling 12y agoGood point. So my question isn't as odd as it might first appear then.