- #1
DeeAussie
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A librarian lifts a 2.2kg book from the floor to a height of 1.25m. He carries the book 8.0m to the stacks and places the book on a shelf that is 0.35m above the floor. How much work does he do on the book?
The "work done" by a librarian refers to the physical effort or energy expended in moving or manipulating a 2.2kg book. This can include tasks such as lifting, carrying, shelving, and organizing the book.
The amount of work done is determined by multiplying the force applied (in this case, the weight of the book) by the distance over which the force is applied (the distance the book is moved or manipulated). This is known as the work-energy principle.
The significance of the work done by a librarian on a 2.2kg book may vary depending on the individual's physical abilities and the frequency of the task. However, in terms of energy, the work done on a 2.2kg book is relatively small compared to other tasks and may not be considered significant in terms of physical effort.
Yes, the work done on a 2.2kg book can be reduced through the use of tools or equipment such as book carts or trolleys. Additionally, techniques such as proper lifting and carrying can also help to reduce the amount of work done on a book.
The work done on a 2.2kg book is generally considered to be a light or moderate physical task for a librarian. Other tasks such as pushing heavy book carts or carrying multiple books may require more physical effort and result in a higher amount of work done. Additionally, tasks such as desk work or computer work may not involve much physical effort at all.