Isn't the normal acceleration always towards the center?

  • Thread starter cipotilla
  • Start date
  • #1
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: 253

Answers and Replies

  • #2
Doc Al
Mentor
45,058
1,367
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
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: 79
  • #4
Doc Al
Mentor
45,058
1,367
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
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.
 

Related Threads on Isn't the normal acceleration always towards the center?

Replies
7
Views
2K
  • Last Post
Replies
1
Views
7K
Replies
9
Views
2K
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
1
Views
950
Replies
1
Views
768
Replies
5
Views
319
Replies
3
Views
3K
  • Last Post
Replies
7
Views
1K
Top