- #1
Kaneki123
- 120
- 3
Okay...I have an example of work calculation in my book in which a girl has carried a bag upstairs( i.e. to some height)...The force the girl has applied is taken equal to the weight of bag( W )...According to my understanding, The girl will apply a force greater than W when she lifts it up from floor, will apply a force equal to W in transit, and will apply a force less than W when putting it down..(Correct me if wrong)...I have a question here that why we are taking the force equal to W when calculating work when that force is not actually causing displacement?