Find Rope Tension for Mountain Climber 695N

  • Thread starter Thread starter ny_aish
  • Start date Start date
  • Tags Tags
    Rope Tension
AI Thread Summary
To determine the tensions in the rope for a mountain climber weighing 695 N, the angles of 65 degrees and 80 degrees must be considered. The correct approach involves using the equilibrium equations, specifically summing the vertical forces and resolving the tensions on either side of the climber. The user initially attempted a calculation using Wsin65 + Wsin80 + W = 0 but found it incorrect. An attached image clarifies the scenario, indicating that the tensions in the left and right sides of the rope are unequal due to the climber's position. Accurate calculations will provide the correct tension values for both sides of the rope.
ny_aish
Messages
21
Reaction score
0
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 695 N. As the drawing shows, (The angle at left is 65) she is closer to the left cliff than to the right cliff (Angle to the right is 80), with the result that the tensions in the left and right sides of the rope are not the same. Find the tensions in the rope to the left and to the right of the mountain climber.

I tried Wsin65+WSin80+W=0 and worked my way out from there, it came out wrong.
 
Last edited:
Physics news on Phys.org
As which drawing shows? :)
 
Hmmm...i attached the image. I hope you can see it, & help me if its possible.
 

Attachments

  • p4-102.gif
    p4-102.gif
    31.8 KB · Views: 547
I've drawn you a picture. Try now.

attachment.php?attachmentid=24201&stc=1&d=1268031892.gif


Note that i just named them the same, but F_rope is different for each rope.
 

Attachments

  • rope-tension.gif
    rope-tension.gif
    3 KB · Views: 620
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...
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...
Back
Top