Carrying Groceries: Calculate the Work Done

  • Thread starter Thread starter Timmy1221
  • Start date Start date
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 4K views
Timmy1221
Messages
9
Reaction score
0

Homework Statement


  1. You carry a 7.0-kg bag of groceries 1.2 m above the level floor at a constant velocity of 75 cm/s across a room that is 2.3 m wide. How much work do you do on the bag in the process?

Homework Equations


KE=(1/2)(m)(v^2)

The Attempt at a Solution


I haven't a clue where to start. Any help would be appreciated and thanks!
 
Physics news on Phys.org
Timmy1221 said:

Homework Statement


  1. You carry a 7.0-kg bag of groceries 1.2 m above the level floor at a constant velocity of 75 cm/s across a room that is 2.3 m wide. How much work do you do on the bag in the process?

Homework Equations


KE=(1/2)(m)(v^2)

The Attempt at a Solution


I haven't a clue where to start. Any help would be appreciated and thanks!
What force do you apply to the bag for the 2.3m? What direction is that force in? How do you calculate work done based on a force and a distance (preferably as a vector equation)?
 
Timmy1221 said:

Homework Statement


  1. You carry a 7.0-kg bag of groceries 1.2 m above the level floor at a constant velocity of 75 cm/s across a room that is 2.3 m wide. How much work do you do on the bag in the process?

Homework Equations


KE=(1/2)(m)(v^2)

The Attempt at a Solution


I haven't a clue where to start. Any help would be appreciated and thanks!
Start off by writing in words the definition of Work Done that you will need here.