Cylinder Definition and 1000 Threads

When given a cylinder with radius, height and thickness, how does one go about computing the amount of material used in making the cylinder? Initially I thought the amount would be: Material=2\pi r^{2}t+2\pi r h t where t is the thickness of the cylinder. Looking at this equation...

Homework Statement A solid metal cylinder of radius R and length L, carrying a charge Q, is surrounded by a thick coaxial metal shell of inner radius a and outer radius b. The shell carries no net charge. Find the potential at the center, using r=b as the reference point. Homework...

hey guys and gals, I'm normally pretty good at my physics homework, but this problem has my STUMPED, I think I am starting it right, but I have no idea how to proceed or if I am on a good path. Homework Statement A Very Long Cylinder with a radius of 7.2cm (.072m) has a uniform density of...

Homework Statement This was a question from my homework. I got it wrong, even after asking my professor about it, and even though I can't get credit for it now, I'd like to know where I went wrong if anyone can help sort me out! "Water is drawn from a well in a bucket tied to the end of a...

Homework Statement Charge density: σ(θ)=w*sin(5θ) (where a is a constant) is glued over the surface of an infinite cylinder of radius R. Find the potential inside and outside the cylinder. Homework Equations s is a point inside or outside of the cylinder, and θ is the angle between...

Homework Statement A chemical reaction vessel has a piston/cylinder arrangement, shown in gure 1 above. When the reaction is complete, the gaseous products are at 250 KPa and 300C and can be considered an ideal gas. The 50 kg piston has a diameter of 0.1 m and initially pushes against a set of...

Hi, so I am trying to calculate the maximum height that would be achieved in a cylinder and have been give only the flow rate. The cylinder itself is a simple straight sided cylinder, the opening at the top has a diameter of 5cm and the hole at the bottom has a diameter of 0.5cm...

What is meant by "no gas enters or leaves the cylinder"? I have the following question. A platform is supported on a piston by compressed air in a cylinder. The mass of the platform and equipment being lifted is 1100kg. The pressure needed to support this mass is 800kPa, and it rests...

1. Water flows out of a cylindrical tank under gravity via a tap, the height h(t) of the water column above the tap satisfies the differential equation in the form dh/dt = -2k√h where k is some positive constant. The water column has a height initially of 25m. The tap is turned on and...

I want to calculate the surface area of semi cylinder with one or both ends skew at a given angle. To calculate the area/perimeter i need to find out the end profile of the semi cylinder. If the skew plane is perpendicular to the cylinder axis, the cut surface would be half ellipse with major...

Hey all, not sure if this is where I'm supposed to post this question, but it is all about heat transfer. So this is part of my design project for my 4th year of chemical engineering. Problem Statement: A hollow cylinder 400 m long has hot combustion gases T = 500 Celsius flowing through...

Homework Statement If the three quantities; mass, diameter, and height for a cylinder are measured with the same percentage error, which would contribute the most to the error in the density?Homework Equations ρ=M/V ρ=4*M/(pi*d^2*h) The Attempt at a Solution so, I tried to answer it like...

This is not a homework problem. Let's say I have an infinite charged cylinder with radius R . And I want to find the E field inside the cylinder. If the cylinder has a line charge of T, that is charge per length. would the charge enclosed just be the ration of the areas of the smaller radius...

This isn't a homework problem, but I was wondering if anyone could explain two things to me. 1. When you have the differential lengths of a cylinder:dlr= dr dl\theta = r d\theta dlz = dz Why is dl\theta equal to r d\theta and not just d\theta?2. When you have the differential...

Okay I hope i can get some quick replies , its urgent i have a science project coming and what i want to do is rotate a cylinder using a d.c motor its a relatively small cylinder radius = 4 cm length around = 15 cm mass will be around 200-300 grams now i can't figure out how can a small...

Hello everyone, I'm working with a design team to take quick and accurate measurements of the middle upper arm circumference in third world countries to assess malnutrition in children. One of the issues in taking measurements is people pulling variably on the tape measure around the arm. My...

Homework Statement http://smartphysics.com/Content/Media/Images/EM/03/h3_lineD.png charge density 1 = .00029 C/m charge density 2 = -.00087 C/m h = .116 m a = .094 m a) What is the total flux Φ that now passes through the cylindrical surface of height h=.116 m? Enter a positive number if...

Situation: A uniform cylinder (Mass M, Radius R) is rotating down a slope of incline θ and distance s, there are two methods which I used to calculate the final speed, one of which considered forces acting on the cylinder and the other using energy, pure rolling assumed throughout, both give...

Since algae can produce oxygen in closed containers, which you can inhale as a byproduct, when provided CO2 from your lungs; you could in theory take diving cylinders filled with algae with you, when diving, correct? I suppose this hasn't been done before, why not?

Homework Statement Given a cylinder of radius = 5m, and height = 10m, how many cubic meters is that? If I just compute those values in the formula for a cylinder, I get 785.4. But 785.4 what? Is it785.4m^3? Homework Equations The Attempt at a Solution

Homework Statement Suppose there are 1000 marbles/meter^3 And I have a cylinder of \pir^2(h), where radius is 2 meters and height is 5 meters. How many marbles can the cylinder hold? Homework Equations Do I have to somehow convert volume of the form \pir^2(h) to volume of the...

I'm a third year chemical engineering major and this is my first real thermodynamics class, so I'm not entirely sure what I'm doing. Any help is greatly appreciated! Homework Statement A rigid horizontal cylinder contains a freely moving piston. Initially, it divides the cylinder into equal...

Homework Statement A closed cylindrical canister with central axis coincident with the Z axis has a height H and a radius R. It is suspended by a rod coincident with the Y axis that passes through the canister, transecting its central axis at a height h above the bottom surface of the canister...

I want to calculate the force generated (as a result of expanding air) from pressure created by heating air up to a maximum temperature of 800 degrees Celsius. My flywheel with a radius of 0,030m is rotating at a speed of 850RPM and weights 0,27Kg. Angular velocity: w=850RPM*(2pi/60)=89rad/s...

If you have a tube and a solid cylinder of the same dimensions and density and rolled them down an inclined plane the 'tube' would cover the same distance in less time?

Okay, so we know that an equation of (x-a)^2 + (y-b)^2 = R^2 is the equation for a circle. Basically where x-a is change in the x-axis and y-b is the change in the y-axis. Here is the thing that I don't get, as quoted from my book. This equation in R^3 (three dimension) defines the cylinder...

Homework Statement Homework Equations E = 1/4(\pi \epsilon_{0}) * \frac{p}{r^2} The Attempt at a Solution E = 2\pir_{0} \epsilon_{0} = pl/\epsilon_{0} = \frac{pr}{2\pi r_{0} \epsilon_{0}} I am going by what I know about Gauss Law and using a similar format for the Electric field equation for a...

Homework Statement There is a cylinder with two sections (not straight down the middle). One has density 4.5(g/cm^3) the other with 6.4. The radius of the cylinder is 6cm and the total length is 19cm. The total mass is 11833 grams. I need to find the length of the lighter density section of...

Hi i have cylinder geometry . bottom (cross section)circle centre point is x1, y1, z1 and top is x2, yz, z2. cylinder centre axis is not allign with any (Global x,y,z) axis. if i want to align a cylinder with Global axis(x,y,z), what is angle need to rotated with respect to x ,y ,z (Global )axis.

The problem states: "An infinitely long cylinder of radius a in free space is charged with a volume charge density p(r)=p0(a-r)/a where (0<=r<=a), where p0 is a constant and r the radial distance from the cylinder axis. Find the charge per unit length of the cylinder." Q = ∫ p dv My...

Homework Statement a solid cylinder of mass m and radius R and a plank of mass M are placed on a smooth horizontal surface. there is sufficient friction between the cylinder and the plank's surface to prevent sliding of the cylinder. the fixed pulley is smooth. if the plank is pulled with a...

Hi Everyone, Imagine a tube of fabric stretched between two hoops, like the one's seen here.. http://www.stretchshapes.net/blog/wp-content/uploads/2012/08/A1.png That is, a cylinder made of an elastic material, under tension. Is there a name for this shape? Is there a generic equation...

1. Homework Statement A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square millimetre; what should be its thickness for a unit working stress of 25 Newtons per square millimetre? 2. Homework Equations ó1 = pd/2t t=pd/2tó1 3. The Attempt at...

Homework Statement A cast-iron cylinder of 300mm bore carries a pressure of 30 Newtons per square millimetre; what should be its thickness for a unit working stress of 25 Newtons per square millimetre?Homework Equations ó1 = pd/2t t=pd/2tó1The Attempt at a Solution t=pd/2tó1 t= 30*300/2*25...

Currently this engine uses a 4-2-1 Setup with a crossover a few inches away from the exhaust port on the header primaries, only on cylinders 2 and 3(which is well before the first collector) This Engines Firing Order is 1-2-4-3The Crossover linking Cylinders 2 and 3 confuse me since are not...

Hi :) What size of double act pneumatic cylinder I need to lift 200 Lbs. of weight, if I have got 10 bars air compressor! All I need for a short stroke 1-3" maximum! Any special formula or calculations for that! Thank you,

Homework Statement The density of air at height z above the Earth’s surface is proportional to e^(−az) , where a is a constant > 0. Find the centre of mass of an infinite cylinder of air above a small flat area on the Earth’s surface. Hint : Consider line density and the identities...

Homework Statement Need to find the volume and density of a cylinder with measurements, height=0.03378m diameter=0.01876m and mass=7.99g +/- 0.01 kg And also its associated uncertainties. Homework Equations V=L*Pi*R^2 =0.00000933716m^3 p=M/V =0.0000008288 The Attempt at a...

Homework Statement A very long cylinder has charge density L/m and radius a. Find the electric field at a distance r, with r > a. The Attempt at a Solution I construct a gaussian cylinder around it with radius r, and then from Gauss' law the field at any point on it's side surface is E=...

If we had a cylinder rolling down a ramp, with scalar friction coefficient us and kinetic friction coefficient uc, and we assume for example that the inclination of the ramp is enough to make the cylinder reach the acceleration needed to exceed the scalar friction of rolling. It means that the...

Homework Statement Use stokes theorem to elaluate to integral \int\int_{s} curlF.dS where F(x,y,z)= x^2 z^2 i + y^2 z^2 j + xyz k and s is the part of the paraboliod z=x^2+ y^2 that lies inside the cylinder x^2 +y^2 =4 and is orientated upwards Homework Equations The Attempt at a...

Hi Can anyone please clarify the following? Let there by a rolling cylinder on an inclined plane. Let the solid cylinder(with Center O) on the inclined plane has Center of gravity at a distance 'c' slightly above O. If the cylinder is displaced slightly through an angle θ then [Let N =...

ωHomework Statement A cylinder of diameter d floats with l of its length submerged. The total height is L. Assume no damping. At time t = 0 the cylinder is pushed down a distance B and released. What is the frequency of oscillation? Homework Equations f = ω/2\pi Ma =...

Hello, for some reason I can't seem to be able to find this. Suppose you have a elastic cylinder, a full cylindrical bar (not hollow), and you want to compress the two end faces (axial compression) together and find the stress in the axial direction...or strain. I can't seem to be able...

A cylinder shaped container of tar has a diameter of 2m. If it is half full of tar with a density of 920 kg/(m^3) and is on it's side, find the force on each end. Helpful hints: 920 kg per m^3 is the mass density not the weight density. Take g= 9.8 m/ sec^2Please assist. I'm not sure at all how...

Hello, I am a bit trumped. I know how to calculate the voltage of a single uniform cylinder: V(r) = (-q/2 Pi ep0) Ln(r/R0) + V0 q: Charge density r: radius from outside of the cylinder. r >= R0 R0: radius of the uniform cylinder V0: applied voltage to the cylinder Here is my...

Is it any model on resisivity of two tightly-attached coaxial cylinder? For example, a copper core wire is coated with layer of aluminum. How to calculate the final resistivity along axis?

I've been reading a few books on scattering of light from particles, in particular mie scattering of cylinders. At first I want to look at infinite cylinders, then finite cylinders once I understand a bit better. The problem is that all of the books I've looked at treat the problem where...

I have a problem in relation to the pressure in a closed piston and cylinder assembly, I know the compression ratio and want to work out the pressure when the volume is at its lowest, boyles law only seems to works if the temperature remains constant but I know that as the piston moves and the...

First let me start off by saying I was a liberal arts major so I need some help with some formulas I've researched. I'm rotating a hollow cylinder that is 8ft in dia. x 8 ft long. The cylinder weighs 3750 lbs and will be filled with 20,093 lbs of watered sewage sludge. Total weight = 23,843lbs...