In a certain library the first shelf is 15.0 cm off the ground, and the remaining four shelves are each spaced 38.0 cm above the previous one. If the average book has a mass of 1.40 kg with a height of 22.0 cm, and an average shelf holds 28 books (standing vertically), how much work is required to fill all the shelves, assuming the books are all laying flat on the floor to start?

In the given scenario, we have to calculate the game's energy stored if all of the books were placed on the shelves, and the following are the calculation of the work:

The number of books on every shelf

weight of each book =

height of each book=

Height of every book's center of mass in relation to its bottom:

Following are the calculation of books energy:

In shelf

In shelf

In shelf

 In shelf

In shelf

Calculating the Total potential energy:

Learn more:

link

1747.9 J

Step-by-step explanation:

The work done to lift a book by a certain height is

where

m = 1.40 kg is the mass of one book

is the acceleration due to gravity

The first shelf is 15.0 cm (0.15 m) from the ground, and it can be filled with 28 books. So, the work done to fill the first shelf is

The 2nd shelf is 38.0 cm above the first one, so its height from the ground is

It can also contain 28 books, so the work done to fill this shelf is

The height of the third shelf is

It can also contain 28 books, so the work done to fill this shelf is

The height of the 4th shelf is

It can also contain 28 books, so the work done to fill this shelf is

The height of the 5th shelf is

It can also contain 28 books, so the work done to fill this shelf is

Therefore, the total work done is:

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

the answer is stop cheating on things stoopid

step-by-step explanation:

im eatin up the 44