How Do You Calculate the Tension in a Rope?

  • Thread starter Thread starter athrun200
  • Start date Start date
  • Tags Tags
    Rope Tension
AI Thread Summary
To calculate the tension in a rope, it is essential to understand that tension results from forces acting on the object. The discussion highlights that tension can be viewed as the force exerted by the rod on one side, while the opposing force from the other side balances it out. It's clarified that the tension is not the sum of both forces, as they are equal and opposite, leading to a net force of zero. Additionally, the centrifugal force must be included in the tension calculation for accuracy. Understanding these principles is crucial for solving related physics problems effectively.
athrun200
Messages
275
Reaction score
0

Homework Statement


attachment.php?attachmentid=38776&stc=1&d=1315827221.jpg



Homework Equations





The Attempt at a Solution


I don't know how to find Tension (T).

I think the Tension contains 2 parts.
First part is the rod near the center, it exerts a force on P toward the center.
Second part is on the other side of the rod, which exerts a force on P away from the center.
Is the Tension equals the sum of the 2 force?
 

Attachments

  • 未命名 -3.jpg
    未命名 -3.jpg
    9.2 KB · Views: 452
  • 未命名 -5.jpg
    未命名 -5.jpg
    10.9 KB · Views: 628
Last edited:
Physics news on Phys.org
The picture doesn't come up on my screen for some reason.
 
I have fixed the problem now
 
I see it now, thanks. I don't know why you called the problem 'tension of a rope', since it is tension in a rod...

About your attempt: The tension is equal to just the force on one side, since the forces on either side are equal and opposite, their sum is zero. (Note: you must include the centrifugal force in the calculation).
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

How do I calculate the Tension in a rope going over a smooth pulley?
Replies
19
Views
1K
Is it friction or tension acting on the person hanging on a rope?
Replies
4
Views
1K
Tension in a deformed cylindrical bag on a surface
Replies
18
Views
1K
Tension in a rope at the midpoint
Replies
8
Views
8K
Tension in Rope Wrapped Around a Rod
Replies
9
Views
2K
Tension in Ropes: Solving Forces on Trunk
Replies
7
Views
5K
Maximum tension in thread connecting loads
Replies
13
Views
1K
Pulley with friction, how to get the friction in the pulley?
Replies
23
Views
2K
Why Does Calculating Tension in Multiple Blocks Require Different Forces?
Replies
2
Views
966
How do varying forces on a massless rope affect tension?
Replies
2
Views
1K

Hot Threads

Recent Insights

Back
Top