A person lifts a package weighing 23 Kg. If she lifts it 2.8 m off the floor, what work has she done?

So, the work done by her is 631.12 J.

Hello ! I will help you regarding energy and its transformation. In this case, it's the use of energy from the lifter to be equivalent to potential energy, because the box undergoes a change in height and the potential energy specializes at a certain height. Work (W) due to change in potential energy () can be realized in the equation :

With the following condition :

We know that :

What was asked :

Step by Step :

So, the work done by her is 631.12 J.

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop