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

Calculate the energy lost to friction

  • Thread starter okgo
  • Start date
  • #1
61
0
1. Homework Statement

http://i43.tinypic.com/i1bq1i.jpg
I need help with number 9

2. Homework Equations

Wnet=change in KE
Wnc=Change in Energy


The Attempt at a Solution


so I'm assuming the energy dissipated means the work done by friction?
so work of friction is umgcos(15)*d
d=cos(15)h
I got that work of friction is -9.8257
Help?
 

Answers and Replies

  • #2
61
0
nvm I figured it out.
.2*mgcos15*d
and the d=h/sin15
:approve:
 

Related Threads for: Calculate the energy lost to friction

  • Last Post
Replies
1
Views
4K
  • Last Post
Replies
4
Views
1K
  • Last Post
Replies
16
Views
47K
  • Last Post
Replies
5
Views
6K
  • Last Post
Replies
19
Views
4K
Replies
2
Views
2K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
23
Views
6K
Top