Cable Definition and 611 Threads

Hello, I am trying to put together a fitness machine that used up to fifteen pulleys. Is there anybody here that is an expert in this field or knows someone who is? I am willing to pay a reasonable consulting fee if they can help solve my problem. Thank you, Edmond

Hello, I have a project for my diploma.And i have some questions. If someone can help me i would be very pleased. I have to know what the cables resistance ( σ ( N/mm2)) is,i mean, how big a force, do i need for cut the cable's plastic?I have a disc (it should be the knife), when it turns...

Hi all, I am doing a paper on the space elevator. On the wikipedia site it states that a climber would be far better off on a stationary cable rather than having a cable pulling the climber since "the cable to be significantly wider at the center than the tips". Why does the center have to be...

A 10-m long cable has a "No Hippos in the Pool" sign weighing 25-N suspended from the middle of the cable. The cable stretches by 2.5 cm. What is the strain in the cable? I know strain is ΔL/L0, but don't really know how that plays out in this scenario. If you could give me the first step or...

Homework Statement In the pulley-cable system shown, the acceleration of block A, x(double dot), varies with time, t(in seconds), as given by the expression x(double dot) = 2t m/s2. initially the two blocks are 5m apart and both are stationary...

Dear all engineers, I would like to know the method of calculation the size of the cables, and what the perimeters needed to do this calculation. also, I would like to know how to get the seqmm cable size if we have AWG cable size And vice versa. thank you

Homework Statement Two weights attached to a uniform beam of mass 56 kg are supported in a horizontal position by a pin and cable as shown in the figure.The acceleration of gravity is 9.8 m/s2 . What is the tension in the cable which supports the beam? Answer in units of kN...

Homework Statement A 4.2 m long uniform post is suspended by a cable having a tension of 1 700 N. Homework Equations What is the mass of this post? The Attempt at a Solution I figure there are 2 forces acting in a clockwise direction (the mass of the log on each side of the...

Homework Statement A uniform 20-kilogram beam is supported in a horizontal position by a pin and cable as shown in the figure. Masses M1 and M2 are suspended from the beam. If M1 = 40 kg and M2 = 20 kg, what is the tension in the cable? Homework Equations Unsure The Attempt at a...

Homework Statement a mass of 18kg is supported at the end of a horizontal beam hinged to a vertical pole, a cable at 32 degrees with the beam is attached to the pole to support the mass. Find the force on the cable, beam, and pole. Homework Equations f=ma The Attempt at a...

1. 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. What would the...

Homework Statement If the maximum tension that a cable can safely withstand is 9000N and the maximum upward acceleration of the elevator is 1.00 ms2, how many 80kg passengers may be safely carried in the elevator? (The mass of the cable is negligible) Homework Equations F=ma T=mg...

Homework Statement A steel cable is suspended between 2 fixed points that are 10m apart. A force of 12N pulls down at a point 6 m from the end of the cable (ie: the other part of the cable will be 4m). Find the tension in each section of the cable Homework Equations The Attempt...

Homework Statement Figure 5-60 shows a section of a cable car system. The maximum permissible mass of each car with occupants is 2800kg. The cars, riding on a support cable are pulled by a second cable attached to the support tower on each car. Assume that the cables are taut and inclined...

Homework Statement A 15 meter beam jutting out of the side of a building is held by a hinge (at the wall) and a cable at 10 meters from the wall. The angle between the beam and the cable is 60 degrees and the mass of the beam is 250 kg. If a 1000 N object is located on the beam, 7 meters...

Hello, My online research has revealed international standards to calculate steady state ampacity of power cables (e.g. IEC 60287), as well as some software programs (Lineamps) and FEA calculations to predict thermal resistance and ampacity of power cables. My question is how to...

On my mouse cable, there is a blob of plastic which coils the wire once around, I don't know what the material is that encompasses it. Someone said it was for to stop UHF flashback. What does this mean? I also have it on loads of electrical appliances.. Cheers Philip

Hi, I´m looking for a table for stranded steel cable mechanical properties where I could find for a particular diameter of cable (and possibly strand arrangement) which is the corresponding yield strengh. Or do I necessarily have to go for ASTM A1023 standard to get this data? Thanks.

Consider a coaxial cable with inner radius a and outer radius b. The potential difference between the inner and outer conducter is V. How can it be shown that the electric field at a distance r from the inner conducter is given by: E = \frac{V}{r ln\frac{b}{a}} Any help would be much...

Homework Statement Hi all. I have the following expression, which relates the incoming amplitude with the reflected amplitude at a point x = L in a coaxial cable: A_{\text{reflected}} = \frac{R-Z_0}{R+Z_0}A_{\text{incoming}}. Here R is the resistance at the point x = L and Z0 is the...

HI why underground cables take continuous relatively high charging currents, while overhead line take less charging current Underground cables have a better voltage regulation than overhead lines due to the lower inductance (how) formula please

Homework Statement The beam is 4.0 m long and has a mass of 14.0 kg. If the beam makes an angle of 41.0 degrees with the wall, what is the tension in the cable? The attachment is the picture to go along with visualizing the problem. Homework Equations sum forces = 0 sum torqes = 0 The...

Homework Statement An elevator weighing 2.00 X10^5 N is supported by a steel cable. What is the tension in the cable when the elevator is accelerated upward at a rate of 3.00m/s^2? (g=9.81m/s^2) Homework Equations I realize this is probably a very simple problem, but neither my textbook...

A shop sign weighing 255 N is supported by a uniform 145 N beam as shown in Fig. 9-54. Find the tension in the guy wire. Find the horizontal and vertical forces exerted by the hinge on the beam.

How do we measure cross-sectional area of a cable (obviously circular)? For example, diameter of a cable as measured from vernier caliper was 19.5 mm. If we apply A = pi(3.14) r2, answer is 298.49 mm square but tag on said cable is showing Area = 10mm square? Please explain.

I work for a contractor and we're currently discussing drains on the roof of a building, and whether they should have electric cable heating around them. It gets cold here and snow does accumulate on the roof. Under what circumstances should cables be used and not? Pros / cons?

Homework Statement Compare sound waves to waves in coaxial cables a.k.a. T.E.M. I really have no idea how to answer this question. I've been researching and researching, and so far i can't find any information about WAVES for coaxial cables. Any help? Thanks. Homework Equations...

Homework Statement http://smg.photobucket.com/albums/v68/jumpboyb/?action=view&current=scan0001.jpg" Pretty much looking for a general equation for capacitance of a coaxial cable per meter length. given: -a diagram (click link) -two radii -dielectric material -outer conductor is...

Homework Statement A train consists of a caboose (1000kg), a passenger car (2000kg), and an engine (2000 kg). If the train has an acceleration of 5.5m/s^2, what is the tension connecting the cable between the passenger and the engine. a) 27.5kN b) 16.5kN c) 11kN d) 5.5kN e)none of the...

Hi, recent EE graduate, I'm working on a project for myself. I dealt with mostly controls, signals, and digital stuff, and not enough electromagnetics or RF so I am pretty clueless here. If I were to radiate the full electromagnetic spectrum from dc to visible light onto a copper cable...

Tension help? Consider the 59 N weight held by two cables. The left-hand cable is horizontal. What is the tension in the cable slanted at an angle of 51◦? Answer in units of N. What is the tension in the horizontal cable? Answer in units of N

Homework Statement A coaxial cable consists of two very long cylindrical tubes, separated by linear insulating material of magnetic susceptibility χm (see Figure). A current I flows down the inner conductor and returns along the outer one, in each case the current distributes itself...

Homework Statement http://members.shaw.ca/code/statics.bmp Homework Equations The Attempt at a Solution I'm having a tough time getting started with this one. Obviously W= 196.2N and AD = 0.425m Do I need to do a force-couple system? Thanks much! Steven

I have a 45kW VSD drive with pf of .9 and FL amp of 75A, I have a 350m run from the MCC to the VSD itself and I'm trying to calculate what size cable I need so that I don't exceed the specified voltage drop of 3%. The line-line voltage where the motor is to be placed is 400V and the cable...

a large wrecking ball is held in place by two steel cables http://img378.imageshack.us/img378/3994/yf0543ei1.jpg if the mass m, of the wrecking ball is 4000kg, what is the tension Tb in the cable that makes an angle 37 degrees with the vertical? F=T + W = ma i drew my FBD i tried...

Homework Statement The 2000 kg cable car shown in Figure P8.39 descends a 200 m high hill. In addition to its brakes, the cable car controls its speed by pulling an 1500 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are...

Homework Statement The 2100kg cable car shown in the figure descends a 200-m-high hill. In addition to its brakes, the cable car controls its speed by pulling an 1840kg counterweight up the other side of the hill. The rolling friction of both the cable car and the counterweight are negligible...

A tow truck is connected to a 1500 kg car by a cable that makes a 23o angle to the horizontal. If the truck accelerates at 0.59 m/s2, what is the magnitude of the cable tension? Neglect friction and the mass of the cable. i know that the car is accelerating at the same rate. my question...

Homework Statement A 150 km long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1030 A. If the conductor is copper with a free charge density of 8.9 1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable...

Homework Statement 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 10^8 m, and the mass of the moon is M = 7.35 x 10^22...

I'm having trouble finding what formula to use for this: A tow truck is connected to a 1400 kg car by a cable that makes a 25 degree angle to the horizontal. If the truck accelerates at 0.55 m/s^2, what is the magnitude of the cable tension? Neglect friction and the mass of the cable.

Homework Statement Immediately outside a very long cylindrical wire of radius r1 = 1mm, the electric field is 40kV/m directed towards the wire's surface. A hollow cylindrical metal tube with inner radius r2 = 3mm is now placed around the wire, to form a coaxial cable. What will be the charge...

[b]1. Compute the cable tension at the midpoint, the quarterpoint and support for a 1600 foot span with a sag at the midpoint of 100 feet, when the cable is loaded with 10 kips/foot spread uniformly along a horizontal line. Midpoint Cable Tension=? a)3200 pounds b) 16000 pounds c) 32,000...

Hi. I've been having trouble with 2 problems and I've worked them both 2 or 3 times. Here's my problems and my work. Any help will be greatly appreciated. 1. Homework Statement In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its...

I spent all day yesterday trying to find the answer to this without success. I know it must be out there, perhaps I just don't know the correct terminology to use in order to find it. My question is this: When I transfer data from one computer to another, the network card in the first...

Homework Statement a coaxial cable carries current as follows: (see attachment) at point P, 0.3 meters from the central axis, the magnetic field is 0.005 Teslas, what is current, I? Homework Equations magnetic field solenoid, B = mu_0(n)I where mu_) is constant = 4pi*10^-7, n is...

So here is the situation: At a particular site a crew of electrical workers were putting some transmission cable in the ground. The cable was off loaded from behind a trencher machine (the cable is in a roll of around 2000 feet). Some short time less than 4 hours another crew came to put some...

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...

Hey guys, I have a ti89 but I lost the USB cable that came with the calculator. I am trying to transfer some data to the calculator, but can I use any regular USB cable to do so? Thats what I read when I searched, but when I use the USB cable that came with my digital camera it says "TI 89...

hi~ i need to determine the tension a in the equation of the hanging cable y=acosh(x-h)/a+k with a known length and known location of end points. i figured out how to determine the horizontal translation h but i need a in order to do it and to have the complete equation. this is for a...