Martha must carry a 45 n package up three flights of stairs. each flight of stairs has a height of 2.3m, and the actual distance of a diagonal path she walks up the stairs is 10 m. what is the total work done on the package?

310.5 J

Explanation:

The total work done by Martha is equal to the increase in gravitational potential energy of the package, which is equal to

where

(mg) = 45 N is the weight of the package

is the increase in height of the package

The package is carried up 3 flights of stairs, each one with a height of 2.3 m, so the total increase in heigth is

And so, the work done by Martha is

what type of charge does it have? negative