Cable Definition and 611 Threads

  1. B

    Calculate Tension in Cable for 225 kg Square Sign Hanging from 3.00 m Rod

    A 225 kg uniform square sign, 2.00 m on a side, is hung from a 3.00 m rod of negligible mass. A cable is attached to the end of the rod and to a point on the wall 4.00 m above the point where the rod is fixed to the wall. What is the tension in the cable? I know I need to use: sum of Fx sum...
  2. L

    Beam hinged to wall with a cable (torque, etc)

    Hi. I've tried to answer this questions four times and so far none of my answers have been correct. Any help is greatly appreciated! A uniform 48 kg (m) beam at an angle of 24 degrees (theta) with respect to the horizontal has length of 38 m (L). It is supported by a pin and horizontal cable...
  3. D

    Getting Online in a Basement Suite: Do I Need a Cable Modem?

    I'm living in a basement suite. The landlords upstairs have internet through cable and told me I'd also have it, but all I have is the outlet where a TV type of cable would normally go. Can I just buy a cable modem from a store, or do I have to get it through a cable company? Do I have to...
  4. B

    Calculating Length of a Cable Between Poles

    A cable hangs between two poles of equal height and 37 feet apart. At a point on the ground directly under the cable and x feet from the point on the ground halfway between the poles the height of the cable in feet is h(x)=10 +(0.4)( x^{1.5}) The cable weighs 15.1 pounds per linear foot...
  5. F

    Solving Tension on Cable Problem - Get the Answer Here

    Hi I have a homework problem I can't understand: A 125-N sign is supported by a lightweight pole and cable as shown in the diagram. What is the tension in the cable? the diagram resembles |> the | is a wall, the top of > is the cable and the bottom is the pole, and the sign hangs from...
  6. A

    How Do You Calculate Tension in a Cable and Determine Mass with Given Variables?

    1.the mass and acceleration is given and asks for tension in cable. What is a formula i could use. 2.in another question initial speed, air resistance, time and speed is given, what is a formula i could use for this question to solve for mass.
  7. B

    How much work was done by the tension in the cable?

    I think I have been staring at this question too long as I can not figure it out. I am sure the answer is simple: A 1500-kg elevator moves upward with a constant speed through a vertical distance of 25m. How much work was done by the tension in the cable? I know that W= (F cos 0)s, and...
  8. C

    What is the Tension in the Left Cable Holding a 2000 Pound Block at 30 Degrees?

    I can't figure this out for the life of me . A large, 2000 pound block is being held by two ropes that were attached to a horizontal beam. The rope on the left made a 30 degree angle, the rope on the right made a 40 degree angle (see image). What is the tension in the left cable? HINT...
  9. S

    How Is the Tension Calculated in the Main Cable Supporting a Piano?

    A 500 kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. Bob's rope pulls to the left, 15 degrees below horizontal, with 500 N of tension. Ellen's rope pulls toward the right, 25 degrees below horizontal. What is the tension in the...
  10. BobG

    Lightning Strike Damage: TVs, Cable Modem & VCR

    We had a thunderstorm Thursday evening and I think my house got zapped by lightening. I lost two TV's, a VCR, and my cable modem. Of course, the good news is that the cheaper the TV, the less damage it sustained. The best TV doesn't turn on at all, while the picture only fills half the screen...
  11. W

    Solving Power Cable Question - Part (b)

    Hello, I solved the first part of this problem, but I am a little stuck with finding the second part, which deals with power. "A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to pull him a distance of 60.0 m up a 30 degree slope (assumed...
  12. C

    Can Network Cable Transmission Speeds Be Independently Controlled?

    I was wondering if there is a schematic or if anyone knows of a way to delay the send and/or the receive of a network cable. Preferable separate circuits. For example can I control how fast people on my network receive but not control the send. May be in the wrong place but i really need help...
  13. J

    Medical Could an Unshielded EEG Cable Corrupt Signals?

    Hi I have just received a high density electrocap for recording eeg -signals and discovered that the cable that leads to the electrodes is not shielded. Does this probably corrupt the signal?
  14. B

    Cable modem so im always connected to the internet

    anyone on here use msn I have have a cable modem so I am always connected to the internet ... however when a program like msn is running does it amke it easier for my computer to become infected with a virus
  15. B

    Calculating Tension in Steel Cable with Masses & Forces

    "If two masses are attached by a steel cable and each mass has a force pulling on it, write an expression for the Tension is the cable as a function of the two masses and the two forces. Assume one of the forces is constant, but the other force changes.
  16. 6

    DVI Cable Pinout: End to End Info

    Anyone know the pinout on a DVI cable...does it cross over or is it straight through? Does pin 1 on one end connect to pin 1 on the other end?
  17. L

    Dependent motion - cable (rope) velocity

    Hi, fellows ! In an arrangement of 2 slinding blocks connected by a cable (rope). I can state the blocks position and their velocity as a consequence. On the other hand, i can't figure out the cable velocity...which concept should I apply for ? VB=18in/s > (Info) VA= 27 in/s > (found)...
  18. C

    Cable Passing Through Metal: What Is It?

    Hi, My camera USB cable has this cylindrical container close to the end where the USB connects to the camera. When I opened it up, the cable was going through two holes in the metal. The metal wasn't perfectly black, and it wasn't smooth. What is that piece of metal for? I don't know much...
  19. wolram

    Solving 3ph Cable Issues with Inverter Driven Motor

    We have an inverter driven 3kw motor at work that is the main drive for a piece of kit we have, it drives via a 300-1 or so gear box, you can turn the whole thing with one finger via the fan on the motor, the problem is the 3ph cable to the motor hardens an breaks down, it is the recomended...
  20. F

    Could My Cable Internet Speed Drop Be Due to Faulty Hardware?

    My cable internet has been going at less than 56K speeds for the past 3 days. I called my ISP which is bright house for central florida roadrunner service, and the technician said that everything looks fine. Last week my speed according to broadbandreports.com was 4400 kbps, now it takes 5...
  21. P

    Electric field of coax cable problem

    A coaxial cable has a charged inner conductor, with charge 8.3 \mu C and radius 2.917 mm, and a surrounding oppositely charged conductor, with charge -8.3 \mu C and radius 5.997 mm. Assume the region between the conductors is air and neglect end effects. The length of the cable is 60 m. What...
  22. G

    Unlimited Energy From a Single Cable?

    This is crazy, but bear with me. Let's say the next mission to the Moon brings a cable. One that's still attached to Earth. They anchor it on the lunar surface. As the bodies move in relation to each other, the cable is tugged by the Moon's incredible mass through a station on Earth that uses...
  23. honestrosewater

    Is Tipping Your Cable Technician Expected?

    URGENT: Do I tip the cable guy? Seriously. I'm stupid and didn't think about it. He's here right now, so I'd like to know. Actually, I'll probably tip him anyway, but I'm curious now. He was on time and very nice. He's pretty cute too. :wink:
  24. Cyrus

    Cable System Step Function Analysis

    Cable System - Step Function Hi, I want to do an experiment using two dissimilar ropes in my basement and see if I can produce some results using a rope analysis. Here’s the set up. I want to tie a light rope to a heavy rope, and be able to characterize the curvature the system takes on. I...
  25. E

    Cox wants me to upgrade: Cable Modem

    I have a Pcx2200 Cable modem by Toshiba.. and according to Cox.. this is just not cutting it anymore... ? ... I did not have service for a month.. and now that I come back they come up with this? What router do you have and does it work with cox high speed [cable] internet? BTW: Anyone...
  26. Cyrus

    Can we accurately predict the shape of a cable system with multiple unknowns?

    I am studying the statics of cable systems and I find it to be very interesting. :approve: I REALLY like statics. :biggrin: Such an interesting subject, anyways. My first question is this: When we have a system of cables supporting weights, say like traffic lights, we can assume the cables...
  27. S

    Movement of Center of Mass for a Pulled Down Cable

    Hello A cable is attached at two (nonemoving)fixpoints. Now the cables midpoint is pulled downward, thereby destroying the catenary curve. Question: How will the cables center of mass (CM) move: op, down or stay fixed? My thoughts: I find it intuituitive that the CM will assume the...
  28. M

    How to find the Tension in a support cable?

    A wrecking ball (weight = 5910 N) is supported by a boom, which may be assumed to be uniform and has a weight of 2820 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the...
  29. S

    Cantilever Cable: PhD Student Researching Deformation Out-of-Plane

    Hello, I am a PhD student in textiles. I was wondering whether anyone has any experience with cables and stuff. For my PhD, I have implemented a Cosserat model for these one dimensional structures as described by the equations of motion given in this article. Ofcourse one tries to validate their...
  30. V

    Power due to the force applied to the block by the cable?

    A 2600 kg block of granite is pulled up an incline which is 36.87 degrees off of the horizontal at a constant speed of 1.07m/s by a cable and winch. The coefficient of kinetic friction between the block and the incline is 0.25. What is the power due to the force applied to the block by the...
  31. S

    Elevator pulled upward by cable - find tension

    here's the question, An elevator cab is pulled upward by a cable. The cab and its single occupant have a combined mass of 2000kg. When that occupant drops a coin, its acceleration relative to the cab is 8.00m/s^2 downward. What is the tension in the cable? could someone explane to me...
  32. A

    Determine the tension in the cable attached to the chair

    A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0 m cables attached to a vertical rotating pole, as the drawing shows. ( = 70.0°) Suppose the total mass of a chair and its occupant is 200 kg (a) Determine the tension in the cable attached to the chair. (b)...
  33. D

    How to Calculate Tension in Cable for Stopping a Moving Truck

    Hello, I'm having trouble trying to calculate the tension in a cable when dealing with constant velocity and no acccel. For example. A block moving with constant velocity tied to a wire that is connected to a fixed wall. When the slack in the wire ends the blocks comes to an...
  34. P

    Find (a) the tension in the cable

    A 20.0 kg floodlight in a park is supported at the end of a horizontal beam of negligible mass that is hinged to a pole. A cable at an angle of 30.0\circ with the beam helps to support the light. Find (a) the tension in the cable and (b) the horizontal and vertical forces exerted on the beam by...
  35. I

    What caused the cable to break during the lifting of a 4500kg container?

    You've been called to investigate an accident in which a cable broke while lifting a 4500kg container. The steel cable is 2.0cm in diameter and has a safety rating of 50,000N. The crane is designed not to exceed speeds of 3.0m/s or accelerations of 1.0m/s^2, and your tests find the crane is...
  36. M

    What is the tension in the cable car's cable?

    The cable cars in San Francisco are pulled along their tracks by an underground steel cable that moves along at 9.5 mph. The cable is driven by large motors at a central power station and extends, via an intricate pulley arrangement, for several miles beneath the city streets. The length of a...
  37. wolram

    Corrosion on the cable fooled my test meter

    Yes i had two today, one was because corrosion on the cable fooled my test meter, the other was because a door swich knob was not in mechanical contact with the switch, two in one day is just not fair, i must be getting sloppy, as i have only had two others in my life ,but then i must...
  38. C

    Unlock the Secrets Behind Cable Channel Encoding

    Does anyone know why on some cable channels I didn't subscribe, I can still see something (with a lot of distortion and noise), while I can't see anything at all in some others? How are the signal modulated and encoded? Are they encrypted? How come some channels are encoded that I can still...
  39. N

    Calculating Tension in the Cable to Hold the Moon

    Q.Suppose the moon were held in its orbit not by gravity but by the tension in a massless cable. You are given that the period of the moon's orbit is T = 27.3 days, the mean distance from the Earth to the moon is R = 3.85 x 108 m, and the mass of the moon is M = 7.35 x 1022 kg...
  40. D

    Pigtail Antenna Cable: Can It Be Substituted With Coaxial?

    Can pigtail cable be substitute with coaxial cable?
  41. A

    Magnetic field of a coaxial cable

    The figure below is a cross-sectional view of a coaxial cable. The center conductor is surrounded by a rubber layer, which is surrounded by an outer conductor, which is surrounded by another rubber layer. In a particular application, the current in the inner conductor is 1.86 A out of the page...
  42. E

    Coaxial cable - Signal on oscillosope?

    Hello all, I once wanted to plug two coaxial cables together (tv - antenna), and when I touched the coaxial cable coming from the antenna, I got an electric shock (a weak one, like if you get an electric shock if you are charged and touch metal). My questions: 1) Why did I get an...
  43. B

    Will the Tow Cable Hold During the Car Tow?

    The Problem: Your car breaks down in the middle of nowhere. A tow truck weighing 4000 lbs. comes along and agrees to tow your car, which weighs 2000 lbs., to the nearest town. The driver of the truck attaches his cable to your car at an angle of 20 degrees to horizontal. He tells you that...
  44. M

    Factors Affecting Ribbon Cable Performance

    Can someone give me some examples of factors that affect the performance of ribbon cable please.
  45. B

    Suspension cable exerts no net horizontal force on the towers?

    I've been trying to solve the following statics problem dealing with suspension bridges: Let d1=span length from tower to shore, let d2=mid-bridge span length (tower to tower). The main cable makes an angle of 24 degrees below horizontal to the top of the support tower on the d2 side and 30...
  46. J

    Calculating GPE and Power for a Cable Car Ride

    Hey just gettin a bit stuck on this question...i'll attempt to answer it, but it really doesn't look right to me. A cable car is used to carry people up a mountain. The mass of the car is 2000kg and it carries 80 people, of average mass 60kg. The vertical height traveled is 900m and the...
  47. S

    What Went Wrong in Calculating Tensions in These Statics Problems?

    1.) A uniform rod AB is 1.2 m long and weighs 16 N. It is suspended by vertical strings AC and BD. A block P weighing 96 N is attached at E, .3 m from A. The tension in the string BD is? http://img116.exs.cx/img116/2822/STATICS1.jpg I did: (.3m)(96N)+ (.9m)(16N) - (1.2 m)(x) = 0 x=36N...
  48. C

    Find Value of C for Catenary Cable | Trial and Error Method

    Can somebody teach me a better way to solve the equation of catenary cable to find the value of c? If there is no other better alternative, can you tell me how to estimate a value for the trial and error method. Thanks
  49. V

    Elevator problem with safety rails, spring, and a snapping cable->

    Elevator problem with safety rails, spring, and a snapping cable---> The cable of an 1800 kg elevator snaps while it is 3.7 meters above a spring with constant of k = 0.15 MN/m. Also, a safety guide rail device provides a 4.4 kN frictional force against the fall for the duration of the fall...
  50. C

    What is the tension force of each cable?

    Hello everyone. First I would just like to say how thankful I am that there is a forum for physics out here. Also I would like to prematurely thank anyone who is going to help me, it is greatly appreciated. Well I am in ap physics in high school, so this stuff should be cake for you guys...
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