Isn't the normal acceleration always towards the center?

  • Thread starter cipotilla
  • Start date
  • #1
cipotilla
31
0

Homework Statement


Homework Equations



See attachment

The Attempt at a Solution


I solved the problem (on the same page as problem, written in pencil) but the direction of the acceleration that I calculated is different, I dont understand why my answer is wrong if the normal acceleration always towards the center and the tangent acceleration is suppossed to be clockwise.
 

Attachments

  • Direction of acceleration.pdf
    34.8 KB · Views: 328

Answers and Replies

  • #2
Doc Al
Mentor
45,412
1,849
Yes, the radial acceleration is towards the center. But I don't see why you think your solution is different from the book's. Seems to me you are just measuring your angle from a different reference direction--they measure from the horizontal, you from the vertical.
 
  • #3
cipotilla
31
0
Yes, the radial acceleration is towards the center. But I don't see why you think your solution is different from the book's. Seems to me you are just measuring your angle from a different reference direction--they measure from the horizontal, you from the vertical.

I think I measured from the horizontal, thats why I think my answer is different from the books, see diagram. Thanks!
 

Attachments

  • Acceleration direction.pdf
    13.4 KB · Views: 133
  • #4
Doc Al
Mentor
45,412
1,849
Looks to me like your diagram is sideways, compared to the original diagram given with the problem. What you call "horizontal" appears as vertical in the original diagram.
 
  • #5
cipotilla
31
0
You are absolutely right, drew my acceleration vectors on the right side of the pulley, where there is no conveyor belt, thats why I got confused. Ok, thanks you.
 

Suggested for: Isn't the normal acceleration always towards the center?

Replies
7
Views
2K
Replies
10
Views
317
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
1
Views
1K
Replies
9
Views
2K
  • Last Post
Replies
1
Views
8K
Replies
1
Views
945
Replies
5
Views
627
Replies
3
Views
3K
Top