Belt Definition and 230 Threads

A belt is a loop of flexible material used to link two or more rotating shafts mechanically, most often parallel. Belts may be used as a source of motion, to transmit power efficiently or to track relative movement. Belts are looped over pulleys and may have a twist between the pulleys, and the shafts need not be parallel.
In a two pulley system, the belt can either drive the pulleys normally in one direction (the same if on parallel shafts), or the belt may be crossed, so that the direction of the driven shaft is reversed (the opposite direction to the driver if on parallel shafts). As a source of motion, a conveyor belt is one application where the belt is adapted to carry a load continuously between two points. The belt drive can also be used to change the speed of rotation, either up or down, by using different sized pulleys.

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  1. L

    Finding the Angle of Lap, Tight Side Tension, & Belts for a Pulley Belt Drive

    to be honest i don't know if this is the right place to be but i got a question, if i have a belt drive consisting of two pulleys what is the equation to find the angle of lap,the tight side tension and number of belts required? I've completely forgot how to do this stuff
  2. L

    Physics Homework Question - Cylinder on a frictional conveyor belt

    Homework Statement A solid, uniform cylinder with mass M and radius R is initially at rest. It is gently placed on a conveyor belt moving at constant velocity V as shown above. The cylinder's axis is perpendicular to the belt's velocity. The coefficients of static and kinetic friction are...
  3. P

    Rotational Mechanics (Conveyor belt)

    Homework Statement A 0.4m diameter, 50KG, solid pulley wheel is used to derive a conveyor belt system on a production line. The belt is very light and it's mass can be taken as zero. The pulley wheel is accelerated from rest at 2 rads/s^2 for 3 secs, then rotated at a constant velocity for a...
  4. D

    How Does Sand Affect the Dynamics of a Conveyor Belt System?

    Homework Statement 5 part question here. "Sand from a stationary hopper falls on a moving conveyor belt at a rate of 5.81 kg/s. The belt is supported by frictionless rollers and moves at .645 m/s under the action of a horizontal external force supplied by the motor that drives the belt."...
  5. T

    Calculate the average force exerted on the driver by the seat belt

    Homework Statement A car is involved in a collision when it is traveling at 24m/s. The driver , of mass 85kg, is brought to rest by the seat belt in a time of 400 ms . Calculate the average force exerted on the driver by the seat belt . Compare this force with his weight , and hence...
  6. D

    Conveyor Belt on Sun: What is it & How Does it Link to Solar Storms?

    Can anyone kindly describe to me in simple words what is sun’ conveyor belt all about and how it is link to solar storm? Thanks
  7. D

    Is Kicking Below the Belt an Acceptable Form of Self-Defense for Men?

    So the young one and I are watching King of the Hill and it is the episode where Bobby took a women's self defense course and learned to kick an attacker in the groin to defend himself. He starts to go around kicking everyone until his dad tells him not to and...well none of this matters. Where...
  8. H

    Where Can I Find a List of Stars in Gould's Belt?

    Does anyone know where to find a list of stars and objects that are part of Gould's Belt? I am not interested in a list of the constellations through which Gould's Belt spans in the sky, but in a list of each of the (most visible or relevant) objects that are actually part of it.
  9. B

    Number of Kuiper Belt Objects Discovered - Find the Answer Here

    I was just wondering how many known kuiper belt objects are there?? I've been searching the net, but I can't find a reliable source that can give me a definitive answer. I know that the estimated number of KBOs that are larger than 100km is 100 000, but I can't find the known number of all KBOs...
  10. S

    A Car on a Conveyor Belt: Will it Move?

    I posed this question to a friend, and we both come to completely different conclusions. Not going too deeply into all the other external factors that might have an effect the scenario, can someone please give me a brief answer to what would happen. ---------------------------------------- A...
  11. E

    Kuiper Belt Info: Sidereal Period & Kepler's Equations

    hello all. i'm working on a project and wondered if anyone had any information on the kuiper belt. actually the only thing i think I'm looking for is the sidereal period for one of these things. google didn't yield anything useful that i saw but i could have missed it. btw we are using...
  12. B

    Van Allen Belt and Its Role in Global Warming: Explained and Debunked

    a friend of mine in university told me to read up on the van allen belt as another argument fro my essay on global warming just being part of a giant climate cycle. but i didnt really find anything relating to the subject does anyone have any link or care to explain
  13. J

    Friction of suitcase on a conveyor belt

    A baggage handler drops your 10 kg suitcase onto a conveyor belt running at 2.0 m/s the materials are such that myoo (i think that's what its called, the coeffectient of friction) kinetic - .3 static - .5. How far is your suitcase dragged before it is ridding smoothly on the belt? The only...
  14. T

    How to find the mass of a conveyor belt so that it doesn't slip

    I postet this problem earlier without really getting anywhere so now I'll post the whole thing: A vertical conveyorbelt has two rollers. A mass hangs in the center of the bottom one to make it taut. On this this belt there are small buckets that scoop up sand in the bottom and then empty this...
  15. T

    Vertical Roller Belt Assembly: Understanding F = S1-S2

    Two rollers have a belt that goes between them, like a conveyerbelt. The assembly stands vertical. The lowest of the rolls have a force that acts on its center, and downwards. My book says that this force F can be written as F=S_1-S_2 where S are the forces that the belt produces as a...
  16. B

    How Does Beam Sag Affect Belt Tension in Metric Units?

    anyways, there's a beam w/ a weight on the end. total=36 lbs. Its 22 in. out from a pivot on the wall. 4" out from the wall and 1 7/16" up from the beam there's a 4.5" pully. There's also another pully above that, and a belt between those two. The beam sags 7 deg. from wall to tip under...
  17. M

    Exploring the Asteroid Belt: What You Can See with the Naked Eye

    If you were to pass through our system's asteroid belt, what would you be able to see with the naked eye? We've all seen the Star Wars version, but that impresses me as more than a bit of dramatic hooey intended to provide excitement. In the real world, if you were to pass through our system's...
  18. wolram

    Kleopatra main asteroid belt between Mars and Jupiter

    http://www.spacescience.com/headlines/y2000/ast08may_1.htm The asteroid, named 216 Kleopatra, is a large object in the main asteroid belt between Mars and Jupiter; it measures about 217 kilometers (135 miles) long and about 94 kilometers (58 miles) wide. Kleopatra was discovered in 1880, but...
  19. D

    How Do You Determine the Final Velocity of a Cylinder on a Moving Conveyor Belt?

    so you have a uniform solid cylinder with mass M and radius R at rest, and its placed on a conveyer belt moving at speed V. coefficients of friction are nonzero, how do you figure out the final velocity of the COM of the cylinder? i don't know, this problem is confusing because you would...
  20. R

    What average force did the seat belt exert on the passenger during the crash?

    Alright, so here's the problem: A 75kg passenger in a van is wearing a seat belt when the van, moving at 15m/s, collides with the concrete wall. The front end of the van collapses 0.50m as ot comes to rest. a)What was the passenger's kinetic energy before the crash? b)What average force...
  21. J

    Work & Energy of disc on conveyor belt

    Problem: The coefficient of kinetic friction between the 100 lb disk and the surface of the conveyor belt is 0.2. If the conveyor belt is moving with a speed of 6 ft/s when the disk is placed in contact with it determine the number of revolutions the disk makes before it reaches a constant...
  22. R

    Dear Nereid and Phobos (seat belt on) can we talk about redshifts?

    redshift difference theory... Assuming that the redshift IS an indicator for distance there could be a possible explanation to the topic.: Assuming furthermore the fact that according to Einstein space and time are just two sides of the same medal and using my thinking model (...
  23. turbo

    Dear Nereid and Phobos (seat belt on) can we talk about redshifts?

    Yes, Russ, I'm strapped in for the ride, but I think it's a worthy prospect. I truly would like to discuss the problems that arise when strict interpretations of redshift=recessional velocity=distance are applied to every visible extra-galactic body. We need to get beyond this. I don't think...
  24. E

    Pulley & Belt Systems - Formulas & Tables

    Hi Can I Find A Complet Website ... Including All About ( PULLEY & BELT ) System ... I Mean - Formulas Of Finding : 1. Pulley Diameters . 2. Belt Length . 3. Center Distance Between 2 Pulleys . 4. Number Of Belts . 5. Other Designing Formulas And Calculations . Also Asking If I Can...
  25. M

    What is the largest object discovered in the Solar System since Pluto?

    http://www.newscientist.com/news/news.jsp?id=ns99994702 The World's No.1 Science & Technology News Service Largest Solar System body spotted since Pluto 11:53 20 February 04 NewScientist.com news service "The largest object to be discovered in the Solar System...
  26. X

    Calculating the Distance a Box Moves on a Moving Belt Without Slipping

    I have no clue how to start solving the question as follows: A box is dropped onto a conveyor belt moving at 1.7 m/s. If the coefficient of friction between the box adn the belt is 0.7, what distance doest the box move before it moves without slipping? (g = 9.8 m/s) What is the horizontal...
  27. wolram

    Kuiper Belt Binary Pairs: Existence Confirmed?

    i remember a referance to, binary pairs in the kuiper belt, i can not remember if a mass for the objects was given or orbital distance, my memory may be fading or wrong, can someone comfirm or dispute the existence of these objects?
  28. I

    Will a conveyor belt push a hovercraft along?

    Hi. This forum seems to be just what I'm looking for! My friend and I have just been having one of those drawn out debates over a hypothetical physics model and I guess (although it was an animated discussion) neither of us was 100% convinced we were correct what we were saying. We were...
  29. D

    Airplane and Conveyor Belt Debate

    I hope there are some physicists here, an argument has been going on for many years between myself and someone else, anybody who has any insight, please answer the following question and you will help to resolve this debate! A 747 jetliner weighing 163844 kg (the empty weight of a 747) lands...
  30. M

    The dreaded conveyor belt problem

    Not too hard I guess. Just wondered if I am correct. question: Gravel is continiously being poured at the rate dm/dt = 80kg/s on a conveyor belt moving at 4.5 m/s. What is the power required to operate the conveyor belt? my answer: power required = work done on the gravel per...
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