Cables Definition and 172 Threads

  1. K

    3D Equilibrium with cables (statics)

    Homework Statement Diagram is attached. The mast OA is supported by 3 cables. If cable AB is subjected to a tension of 500N, determine the tension in cables AC and AD and the vertical force F which the mast exerts along its axis on the collar at A. a = 6m b = 3m c = 6m d = 3m e = 2m f = 1.5m...
  2. S

    How to calculate power loss in transmission cables?

    Power station generates 120kW Electricity can be transmitted either at 240V or at 24000V using a step-up transformer. The cables have total resistance of 0.4W What is the power loss when voltage is transmitted at: 1) 240V 2) 24000V I AM SURE YOU CAN WORK THIS OUT USING I...
  3. P

    A Loudspeaker is suspended by Cables

    SOLVED Homework Statement A 18 kg loudspeaker is suspended 1.6 m below the ceiling by two 3.0 m long cables that angle outward at equal angles. What is the tension in the cables? N Homework Equations F= ma The Attempt at a Solution I believe that I have the drawing correct...
  4. V

    Electormagnitics Quests relating coaxil cables and other

    Hey Guys i have tried to attempt some of these questions i just don't understand where to start from i need the main formulas that can help me do these questions thanks alot a) coaxial line consists of an inner conductor of radius RA = 1 cm and outer conductor with an internal radius of RB =...
  5. C

    High Frequency Signals & BNC Cables: Explained

    Hihi, I don't understand what is the meaning that BNC cable transfer high frequency signal? For example, I use BNC cable for the connection between my diode controller to the diode laser. I also use BNC cable to connect my photodiode to the oscilloscope. I'm not sure what is the...
  6. J

    How Do You Calculate Tension in Angled Cables?

    [SOLVED] Tension in two cables Homework Statement 21.0 kg loudspeaker is suspended 2.40 m below the ceiling by two 3.90 m long cables that angle outward at equal angles. The attempt at a solution So my homework comes from the MasteryingPhysics online homework. What I first start out with is...
  7. E

    Solving Tension Force in Plank Supported by Cables

    Homework Statement A strong plank 8.0 m long and having a negligible mass is supported by steel cables from both ends. A jaguar with a weight of 800 N stands 2.0 m from one end. What is the tension force in the cable farthest from the jaguar? a. 120 N b. 200 N c. 240 N d...
  8. robphy

    James Randi Offers $1M Award for Proof of Expensive Speaker Cables

    Slashdot is reporting "James Randi Posts $1M Award On Speaker Cables" http://science.slashdot.org/science/07/10/04/1354224.shtml http://www.randi.org/jr/2007-09/092807reply.html#i4 http://gizmodo.com/gadgets/speaker-cables/7250-speaker-cables-turn-you-into-a-dancin-fool-302478.php...
  9. S

    Calculate Tension in Cables to Support Cantilever Beam

    hello everybody i have a problem of how I can determine the tesion in three cables required to support a cantilever beam have a distributed load of 302 kg/m
  10. S

    Parabolic Cables: Info for Grad Thesis

    i need some information about parabolic cables (links,books,equations etc.) for my graduation thesis. Thanks
  11. M

    Boom held by 3 cables (Statics)

    Homework Statement I've included a picture of the problem so you can see the diagram too. The question is asking for the tension of 1 cable, when 2 are given (problem# 41).Homework Equations no equations per se.The Attempt at a Solution I resolved cable AC and cable AD, but don't know how to...
  12. S

    Conductors and co-axial cables?

    Conductors and co-axial cables!?? Say you have a long conducting hollow cylinder with some surface charge density \rho which is inside another hollow (uncharged) cylinder. What would the electric field be outside the outer cylinder? I am guessing that the e-field outside the outer cylinder...
  13. B

    What are the tensions in the cables for a 750lb weight at the origin?

    Homework Statement Ok, I've got three cables all pointing in a downward direction towards the orgin. They all connect at the orgin, onto a 750lb weight. Determine the tensions in A,B,C. I'm going to put these into (x,y,z) form, so you get the picture. A = (4,-2,5) B = (-3,-3,6)...
  14. P

    Find the forces exerted by the two cables

    I'd appreciate help with this problem as I don't know how to start it: A beam with a mass of 1500 kg and a length of 2.0 m hangs from two cables, such that it makes an angle of 65degrees with the vertical. Both of the cables are completely vertical; one is attached at the lower end of the...
  15. C

    Magnitude of force exerted by cables on a tower

    Given the tower is 70 m high, and the force of FAB= 2 kN and the x and z components of the vector sum of the forces exerted on the tower by the 3 cables are zero. I have found the lengths of all 3 cables. I have also found the unit vectors for all 3 cables. I just do not know how to find the...
  16. R

    Calculating the Tension in Steel I-Beam Cables

    The steel I-beam in the drawing has a weight of 8.90 kN and is being lifted at a constant velocity. What is the tension in each cable attached to its ends? (picture attached) for this problem do i need to first convert kN to N?...and I am just not sure where to start...
  17. dduardo

    Where to Buy 10-Pin Female Flat Ribbon Cables [ooooo]

    Does anyone know where I can get a few 10-pin female flat ribbon cables. They look like this: http://hubbard.engr.scu.edu/embedded/lcd/lfh8p4032b/P1010029.JPG The header looks like this: [ooooo] [ooooo]
  18. Cyrus

    Why Do Cables Use dx for Distributed Loads and ds for Weight?

    First, on an unrelated note, I would like to share an anwser I think I found to be correct on a question I posted here a while back. I asked about how a smooth collar that was Not Pinned could prevent a moment. The problem I was faceing was the fact that in order to have "play" so that the...
  19. P

    Solving Tension Problem with 3 Cables | Philip

    I'm a bit stuck on a tension problem, I have a weight supported by three cables. I will have to admit, up to this point, I have been cheating on these tension problems. What I have been doing is writing various equations and using my TI-89 to solve the system of equations. This method has been...
  20. D

    Is My Ethernet Cable Draining Laptop Battery?

    It is the second occurence. In the morning, when i turn on my computer, i figure out that it has around 4-6% battery powe missing. At night, only the ethernet cable (and usb mouse, but i eleminated it as a suspect for the power theft :cool: ) is plugged in. So could be that the thief here is...
  21. B

    Solving a Weighty Problem: Calculating Tension in Steel I-Beam Cables

    Hello again, I'm stuck on a new problem. Again, I thought I had the correct equation but apparently not as my answer is not correct. Here's the problem: A steel I-beam has a weight of 9.10 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends...
  22. D

    Power Cables Info: Amperage, Current, Wattage & More

    Greetings ! I was searching for this on the web for a couple of days and found practicly nothing. This is highly unfortunate because it means that not only did I not get the info I wanted but I'm also lousy when it comes to such searches (and I was actually of the opposite opinion prior...
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