• Support PF! Buy your school textbooks, materials and every day products Here!

A man wants to move some heavy boxes up to the loft in his barn

  • #1

Homework Statement


A man wants to move some heavy boxes up to the loft in his barn. He uses a 2.25 Horsepower motor to pull the boxes a distance of 9.35 meters up a ramp inclined at an angle of 36.2 degrees with respect to horizontal. The boxes have a coefficient of kinetic friction .381 as they slide along the ramp.
a) What is the heaviest box the man can pull up the incline with his motor at a constant speed of 76.5 cm/s?
This question has more parts but this is the only part I have trouble with.

Homework Equations




The Attempt at a Solution


Table.PNG

I made the picture now i am lost on where to go to find the heaviest box.
 

Attachments

Answers and Replies

  • #2
kuruman
Science Advisor
Homework Helper
Insights Author
Gold Member
8,418
1,914
What have you learned about power? How about a relevant equation relating power to speed?
 
  • #3
What have you learned about power? How about a relevant equation relating power to speed?
That helped a lot didnt know where my mind was... thank you!
 

Related Threads for: A man wants to move some heavy boxes up to the loft in his barn

Replies
3
Views
6K
Replies
1
Views
2K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
4
Views
10K
  • Last Post
Replies
1
Views
4K
Replies
7
Views
656
Replies
7
Views
13K
Replies
1
Views
2K
Top