Rubber Bands and Paper Clip

  • Thread starter BeefyBeef
  • Start date
3
0
Hi all. I have a question. How do you show the difference between stress (pressure) and force? We were given 2 short elastic bands, 2 long elastic bands, and 2 paper clips. Idea that came up was to tie one elastic band to 1 weight (anything). Suspend it. And measure length of elastic band. Then take 2 same length elastic bands and tie them both to wait suspending the same weight with the elastic bands side by side. Then measure the length of the elastic bands.

Obviously, the parallel suspension will have shorter length. This goes to show that the two elastic bands have twice as much cross sectional area if you dice the elastic bands than the experiment with only 1 elastic band. I understand that pressure is the amount of force per unit area. However, I don't see how this connects to showing the difference between stress and force? How do I show it? If i can't with this experiment. What other experiment can I do?

And the other experiment is to show the differcence between strain and deflection. This one. I blanked out. Thoughtless. No idea. All I know is that strain is change in length over the original length. Plz Help. Thx.


peace
 

russ_watters

Mentor
18,848
5,039
You seem to understand the concepts, but I'm not sure what you mean by "show" it.

It isn't easy to measure the cross sectional area, but typically there is a direct relationship between length and cross sectional area. Double the length and you cut the cross sectional area in half.
 

Related Threads for: Rubber Bands and Paper Clip

  • Posted
Replies
12
Views
18K
Replies
1
Views
1K
Replies
13
Views
43K
Replies
2
Views
5K
  • Posted
Replies
2
Views
684
  • Posted
Replies
15
Views
2K
Replies
6
Views
2K
Replies
5
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads

Top