For example , if you hang a 20 - pound weight and attach it to an athlete using a tube or band , it may take 27 pounds of energy to move the weight .
You can think of it as the amount of energy exerted to move something .
If you hang a 20 - pound weight and attach it to an athlete using a tube or band , it may take 27 pounds of energy to move the weight .
You can think of it as the amount of energy exerted to move something .