Friction and a pulley

  • Thread starter algar32
  • Start date
  • #1
89
0

Homework Statement



A system comprised blocks, a light frictionless pulley, and connecting ropes is shown in the figure. The 9.0-kg block is on a perfectly smooth horizontal table. The surfaces of the 12-kg block are rough, with \mu_k = 0.30 between the block and the table. If the 5.0-kg block accelerates downward when it is released, find its acceleration.

the figure looks like this picture (except M= 5kg):
http://www.cramster.com/answers-feb...s-light-frictionless-pulle_1126069.aspx?rec=0

14 minutes ago
- 4 days left to answer.



Homework Equations





The Attempt at a Solution


I want to say it is 1.6 m/s^s but I am not sure If I did it right.
I just added the force friction to the force tension and then divided by the weights (9+5).
Not sure if this is correct or not.
 

Answers and Replies

  • #2
157
0
Looks right to me.
 
  • #3
296
0
This is very similar to the earlier problem you asked.

Use those equations to find the answer :-)
 
  • #4
157
0
Looks right to me.
EDIT: I was doing this question wrong earlier, refer to emailanmol's posts in your other thread.
 

Related Threads on Friction and a pulley

  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
10
Views
14K
  • Last Post
Replies
1
Views
1K
  • Last Post
4
Replies
93
Views
4K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
1
Views
3K
Top