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

How much work is being done?

  • Thread starter bcalkins
  • Start date
  • #1
19
0
A farmhand pushes a 26-kg bale of hay 3.9 meters across the floor of a barn. If she exerts a horizontal force of 88N on the hay, how much work has she done?

My Answer:
W=88N x 3.9m
= 343.2 Joules

My question: Is this correct or do I have to do something with the mass of 26-kg?
Thank you!
 

Answers and Replies

  • #2
Doc Al
Mentor
44,912
1,170
Perfectly correct. The mass is irrelevant. (But maybe the question has another part.)
 

Related Threads on How much work is being done?

  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
8
Views
3K
  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
4
Views
6K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
2
Views
6K
Replies
2
Views
1K
Replies
4
Views
19K
Top