Today while riding in the elevator i noticed a real world application of an Atwood machine. Since the lab we did using an atwood machine to "dilute" gravity i have noticed their applications in the real world. Also i have noticed that elevators put energy into a system and therefore do work. They do work because when they raise you they increase your gravitational potential energy. the amount of work they do is equal to the height they raise you, this is then multiplied by the force it take for u to be raised. the value that then results from this is the amount of work done. But because an elevator is an atwood machine some of this weight is offset by the counterweights.
