Work Done by Librarian on 2.2kg Book

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SUMMARY

The discussion focuses on calculating the work done by a librarian lifting and carrying a 2.2kg book. The formula for work, W = Fs, is applied, where F is the force calculated as the product of mass (m) and gravitational acceleration (g). The librarian lifts the book to a height of 1.25m and carries it 8.0m, placing it on a shelf 0.35m high. The total work done involves both the vertical lift and the horizontal distance traveled.

PREREQUISITES
  • Understanding of basic physics concepts, specifically work and force
  • Familiarity with the formula for work: W = Fs
  • Knowledge of gravitational acceleration (approximately 9.81 m/s²)
  • Ability to perform basic arithmetic calculations involving mass and distance
NEXT STEPS
  • Calculate the total work done using the formula W = Fs for both vertical and horizontal movements
  • Explore the concept of gravitational force and its impact on work calculations
  • Learn about different types of work in physics, such as mechanical and gravitational work
  • Investigate real-world applications of work calculations in various fields, including engineering and logistics
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the principles of work and force in practical scenarios.

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?
 
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Hey DeeAussie, Well you seem to have all the correct pieces of information. All you have to do is apply it to the Formula for Work, where in this case it is W =Fs, where F = mg.

W = work, F = Force, s = distance i.e. the height and the distance walked, m = mass, g = gravity.
 

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