joshua is holding a book near shoulder - height. use the drop - down menus to indicate what happens to the…

joshua is holding a book near shoulder - height. use the drop - down menus to indicate what happens to the gravitational potential energy of the book if he places it on each shelf. shelf a shelf b shelf c

joshua is holding a book near shoulder - height. use the drop - down menus to indicate what happens to the gravitational potential energy of the book if he places it on each shelf. shelf a shelf b shelf c

Answer

Brief Explanations:

Gravitational potential energy ($U = mgh$, where $m$ is mass, $g$ is gravitational - acceleration, and $h$ is height) depends on the height of the object above the ground. If the height of the book relative to its initial position (near shoulder - height) decreases when placed on a shelf, the gravitational potential energy decreases; if it increases, the gravitational potential energy increases. Assuming shelf A is above the initial height, shelf B is at the same height, and shelf C is below the initial height. Placing the book on shelf A increases its gravitational potential energy, on shelf B keeps it the same, and on shelf C decreases it.

Answer:

shelf A: Increases shelf B: Stays the same shelf C: Decreases