Belt Definition and 231 Threads

Hello all. I am trying to understand how to calculate the load in a certain arrangement. More specifically, when there is no work being done on the belt, a set of idlers are under equal load. When the main drive pulley at the top is rotating counter clockwise, the belt on the right in the...

Homework Statement I think I made a mistake somewhere.. Homework Equations T = Jα T = F*R The Attempt at a Solution A) I started with T = Jα Since there is no slip, αm = αL Thus: Tm / Jm = TL / JL Plugging in, we find TL = Tm * JL / Jm = 2560 Now use T = F*R. Tm = Fm * Rm Plugging in...

Homework Statement Your leather belt holds up your baggy jeans. How? What happens when you change variables such as making the belt wider, more narrow, thicker, or adding elastic?[/B] Homework Equations N/A The Attempt at a Solution Reducing diameter of the belt by tightening inreases friction?

There is much sci-fi and techie talk of colonising Mars, or the Moon, and giant space habitats as far as the Asteroid Belt. But as you venture further out the Sun's power diminishes proportional to the square of the distance, and the solar panels that power all this life become extremely...

Homework Statement A series of small packages, each with a mass of 4 kg, are discharged from a conveyor belt as shown. Assume that the coefficient of static friction between each package and the conveyor belt is 0.4. Determine the force exerted by the belt on a package just after it has passed...

Homework Statement It is a Matching Type Problem(a single entry in a column can be matched with more than one in the other column):- A block is projected with an initial velocity ##v_{\text{Block}}## on a long conveyor belt moving with velocity ##v_{\text{Belt}}##(at that instant) having...

I am trying to list down all possible reasons because of which gear train drive is not preferred for driving alternators in automobiles, can you suggest some?

Trying to build a case for a belt driven ball screw axis versus a Planetary gear box, with the fact that the motor vibration would carry down the gearbox to the axis, but the timing belt drive would isolate the motor vibration. How would I model this? and ideally a way to get a factor of...

Can someone please help me in calculating the total size in km of the Asteroid Belt? I have read the Asteroid Belt if lumped together would create a planet 4 times the size of Earth, however, I am trying to validate these numbers and am having difficulty in doing so. Here are the facts I have...

I was studying the Van Allen Belt, and I get it except for the mirror points (see picture). What would cause the particle to be deflected or turned around? Seems to me it would just continue towards the Earth getting tighter and tighter around the field line...

Hi, everyone I have a mechanical problem I hope someone can help me out The project of internship is "Normalization of belt in a belt conveyors" , I explain ; the factory where I'm now have 69 conveyors each one use a belt different from the other , so my goal is to reduce the number of belt...

Hi People, I'm being scheduled to take the Six Sigma Green Belt Certification exam sometime in the summer 2017. They already have the registration deadlines/dates up for 2017 already. It's an Open-book, open-notes, calculator-allowed test according to what I've been reading online. I'm...

Homework Statement verify that theta in L = piD + (d-D)theta + 2Csin(theta) is equal to arc-cosine [(D-d)/2C] 2. The attempt at a solution you can see my attempt in the second picture uploaded. i don't think i even got it right

Hi there, I am currently trying to work out what force I will need to pull the curtain out and in (in the system shown in the attached illustration) so that I can calculate the torque required to turn the black cylinder component and therefore find out what motor I will need. I am simply...

Hi. Me and my team are re-building a human powered aircraft's transmission system, and are currently designing the part of the pulley and belt. We've bought the belt and pulley quite some time ago from different shops, thus, we now have to re-investigate whether the pulley and the belt match...

I am driving 2 different gears with a belt off of a stepper motor that has a step angle of 0.018 degrees. For the purpose of my project, I need to have high precision between the stepper motor and the gears that it's driving. Is it necessary to have 20,000 teeth (360/0.018) on the gear that's...

The system is similar to above. Say I have calculated the required power at the spindle and various speeds (rpm) the spindle needs to run at. I am not sure on how to choose the constant speed of the counter shaft. For the motor HP i am thinking it is just Pmotor = Pspindle/Efficiency. Also not...

Hi, I have 5 machines with flywheels, which are connected with one single belt, so that all five flywheels rotate together. Torque required for each flywheel to rotate is 300 Nm and rpm is 500. what would be the total torque required to rotate five flywheels connected with one belt?

Homework Statement Sand runs from a hopper at constant rate dm/dt onto a horizontal conveyor belt driven at constant speed V by a motor. (a) Find the power needed to drive the belt. (b) Compare the answer to (a) with the rate of change of kinetic energy of the sand. Can you account for the...

1. The problem statement, all variables and given/known Homework Equations P=Fv K.E = 1/2 mv2 The Attempt at a Solution This is the examiner report: Why infinite acceleration? Is it because the mass is too small?

Homework Statement Ok, so first I find the tension on the top portion of the belt.. 3.0=T(100/1000) , T-> tension T=30N , though I'm not sure if taking the diameter of Q is correct. Then I find the torques on wheel P, which I multiply the tension with the radius (150/2 mm) which I get 4.5 Nm...

So far i imagine things as following : instead of spinning up the whole rock, they have a spin station nearby, and build really big structures in microgravity, hangars for ships, factories etc. Due to lack of biosphere, it is common to reprocess dead bodies to food, fergitilizer. Questions ...

I am facing problem in calculating the shaft torque for my system. Motor is driving pulley and that pulley is coupled with belt with another big pulley (please refer attached file image). Motor power 19.4 kw, Torque- 71.8 Nm, Motor Rated speed- 2580 rpm, motor shaft dia=42mm Pulley dia (refer...

So I'm planning on making the seat belt to work as a kill switch for an automobile using a Reed switch and a magnet. But I'm confused as to whether I should buy or make one. If I should buy it where should I go? Please give me your suggestions as I have to find the most efficient way and I have...

Hello, I am trying to determine the tension in a belt conveyor transporting material to calculate the motor power required and also tensioning force needed on it. I wanted to know how the material weight that is being carried affects it. I considered the tension to be equal to the friction...

Homework Statement What would be the effect on the following if the load torque is increased and the speed maintains constant: a) the tension in the tight side of the belt b) the tension in the slack side of the belt c) the power transmitted Homework EquationsThe Attempt at a Solution I...

Homework Statement Coefficient of friction of a flat belt and of a vee belt Homework Equations I know the lap angle, m2, T2, T1/T2 and ln (T1/T2) for the flat belt and lap angle, m2, T2, T1/T2 and ln (T1/T2) The Attempt at a Solution I attempted to find it by plotting a graph using the lap...

Homework Statement http://oi59.tinypic.com/2lacy0o.jpg Homework Equations P = ? T2/T1 = e^(u)(θ) M = 150 N*m The Attempt at a Solution [/B] T2/T1 = e(.4)(7π/6) T2/T1 = 5.466 I don't even think I'm on the right track.

Hi I am new to this site, I'm currently studying my Engineering Foundation degree and I am massively struggling on the theory side to pulley tensions. Please could anybody point me to some sites or some information which would help me understand and answer this question in detail. I have not...

Homework Statement http://imageshack.com/a/img908/282/eCETrh.png The green support turns clockwise at +w around the white fixed axis. The stator of the motor is fixed on the support. The stator of the generator is fixed on the support too. The motor drives the generator with a crossed belt...

Consider the belt drives, the driven pulley: diameter d1, angular velocity w1 and the follow pulley: diameter d2, angular velocity w2. Assuming that the driven pulley rotate with a constant angular velocity and the belt does not slip on the pulleys, we have w1/w2=d2/d1, so w2 is constant(...

I am designing an elevator system and i wanted to use timing belts with a counterweight. After almost fully completing the design it was brought to my attention that my pulley and belt setup was not the best choice. Any insight on what anyone thinks would be great! The top pulley and belt...

Homework Statement [/B] A motor accelerates more and more a wheel without friction. It is supposed the belt gives forces F1 and F2 at only one point. http://imageshack.com/a/img674/1437/Uh0XIp.png Homework Equations None The Attempt at a Solution I would like to know if I drawn all...

Why are electrons generally further out than protons in the Van Allen Belt?

Hello All I have recently been trying to get my head around torque and think I am getting there. but I am struggling to understand the different of using a wrench to move an object i.e a bolt and using a belt to move something ok i.e an alternator. I don't get is it the entire lenth of...

Howdy all! In some project I do,I need to design belt transmission,now the tricky part is: On the output of the belt,I have wheel that needs to turn at 700 rpm,and I need to deliver power of 6KW. Now the weird question:I need to design the belt transmission so I will have 20 percent power loss...

My initial thought was that the plane wouldn't be able to take off. If the conveyor is moving in the opposite direction as the plane, at the same speed, then the plane wouldn't move relative to the ground (as if you're running on a treadmill, you're not actually changing position relative to the...

What are the factors to take into account when deciding between using a belt or a gear system for transferring power? Thanks

Homework Statement Sand is being poured onto a conveyor belt at the rate of 2kgs-1. Find the force required to move the belt at an acceleration of 3ms-2. Given the sand is not dumped off the belt at any point and the mass of the conveyor is negligible. Homework Equations F=ma=dP/dt...

Homework Statement Here is what the belt system looks like. The first part of the problem is to prove that the length of the belt between pulleys is assuming a negative radius for the backwrapped pulleys (idler and tensioner). The second part is to derive the equations for...

Rejoice, Pluto fans! Distant world surpasses its rival, Eris, in new analysis. Link: ScienceNOW

Does anyone know where I can get those values? Haven't been able to find them anywhere

Hey phys community. need a little help, I am looking to calculate the energy needed to move an object from point A to point B on a conveyor belt. I need to know how to calculate this on a horizontal surface, incline, and decline. The abstract would be cool formulas would be cool. My math...

http://www.nasa.gov/content/goddard/hubble-sees-asteroid-spouting-six-comet-like-tails/#.UnvGoHemYRc Hubble photos http://www.nasa.gov/press/2013/november/nasas-hubble-sees-asteroid-spouting-six-comet-like-tails/ NASA press release

Homework Statement A package is dropped on a horizontal conveyor belt. The mass of the package is 4m , the speed of the conveyor belt is 3v , and the coefficient of kinetic friction between the package and the belt is 2k . a) How long does it take for the package to stop sliding on the...

A belt contects two pulleys with radii $\displaystyle5\text { in}$ and $3\text { in}$ the $\displaystyle5\text { in}$ pulley is rotating at $\displaystyle\frac{1000\text{ rev}}{\text{min}}$ What is the linear $\displaystyle\text{v}$ in $\displaystyle\frac{\text{ft}}{\text{sec}}$ of the belt...

two pulleys connected by a belt have 15cm and 8cm radius The larger pulley rotates $25$ times in $36$ sec, Find the angular speed of each pulleey in radians per second. the 15cm pulley has circumferce of $30\pi$ so $\displaystyle\frac{25\text { rev}}{36 \text {sec}} \cdot\frac{30\pi\text{...

A pulley has a radius of $12.96\text { cm}$ it takes $18\text { s}$ for $56\text { cm}$ of belt to go around the pulley. (a) find the angular speed of the pulley in $\displaystyle\frac{\text {rad}}{\text{s}}$ well from $\displaystyle\frac{56\text { cm}}{18\text{ s}} \approx \frac{3.11\text {...

Homework Statement If there are two asteroids A and B of equal mass (and density of 3000kg/m^3), with the same semi major axis of a=2.2 AU with asteroid A having a circular orbit and no inclination, and asteroid B has an elliptical orbit with an eccentricity of e=0.05 and an inclination of...

Homework Statement Homework Equations T1/T2=eμs*β where T2 is the larger tension and β is the angle between the tensions.The Attempt at a Solution Isolating each pipe: W1 = 50*9.81 = 490.5N For pipe B, β = (2π)/3 For pipe C, β = π/3 For pipe B, T2 = 490.5N, so I have: 490.5/T =...