Calculating Tension in Two Ropes

  • Thread starter Thread starter kamalpreet122
  • Start date Start date
  • Tags Tags
    Tension
AI Thread Summary
To calculate the tension in two ropes supporting a 250 kg weight at angles of 30 and 60 degrees, users noted discrepancies between their calculations and the answer sheet, which lists tensions of 1420 N and 2470 N. It was suggested that the answer sheet might have used approximations, such as g = 10 m/s², affecting the results. Participants confirmed that the method used for calculations was correct, indicating that the issue likely lies in the assumptions made in the answer sheet. The discussion emphasizes the importance of consistent gravitational values in physics problems. Accurate tension calculations are crucial for understanding forces in static equilibrium scenarios.
kamalpreet122
Messages
13
Reaction score
0

Homework Statement



A 2.50X102Kg weight is suspended from two ropes that are angled at 30.0degrees and 60.0 degrees above horizontal. What is the tension in the two ropes?

The work i did is in the attachements .. The answer sheet says the answer of the two forces is 1420 N and 2470 N i can't seem to match those answers =( please tell me where i went wrong
 

Attachments

  • scan0022.jpg
    scan0022.jpg
    32.9 KB · Views: 447
  • scan0023.jpg
    scan0023.jpg
    12.4 KB · Views: 435
Physics news on Phys.org
In this question you have got a lot of calculations. Maybe the answer sheet has shown answers with g = 10 and some other approximations. Also the answers like 1420 N and 2470 N suggests this . Your method is correct.:approve:
 

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
Monkey accelerating up and down a rope
Replies
38
Views
4K
How Do You Calculate the Tension in a Rope Holding a Chandelier?
Replies
8
Views
1K
Problem with pulleys - two fixed and one movable
Replies
22
Views
319
Calculating Max Tension, Final Angle for Swinging on Rope Over Lake
Replies
43
Views
4K
Tension in two ropes attached to a beam
Replies
8
Views
10K
Tension in a deformed cylindrical bag on a surface
Replies
18
Views
1K
Rope between inclines with maximum length of hanging middle portion
Replies
46
Views
2K
Tension in a rope at the midpoint
Replies
8
Views
8K
Tension in a rope hanging between two trees
Replies
7
Views
9K

Hot Threads

Recent Insights

Back
Top