Question

A Librarian lifts a box of books that weighs90 N through a distance of 2 m. How much work does he do?

Answer 1

Answer:

180 J

Explanation:            

Given:

Mass of the box = 90 N = Force applied in the direction of motion

Distance through which the box is carried = 2 m

To find:

Work done by the librarian (in joules)

Method to find:

W = F * d    (Work done = Force * Distance)

⇒ W = 90 * 2

⇒ W = 180 Joules                                      

Hence, the work done by the librarian is 180 Joules.