Wheel Definition and 840 Threads

I need to simulate the flow of a river, to do small scale hydrodynamics testing on a partially submerged water wheel / paddle wheel design. The typical water tunnel setup will not work, because we are interested in the flow near the surface. The water wheel is half in the water, and half out...

Homework Statement Suppose that you're on a circular ferris wheel with a radius of 22 m. You know that your mass is 64 kg on the very bottom part of the ferris wheel, even though your actual mass is 58 kg. How long does it take for the ferris wheel to go one revolution? Homework Equations...

Homework Statement A stiff uniform wire of mass M0 and length L0 is cut, bent, and the parts soldered together so that it forms a circular wheel having four identical spokes coming out from the center. None of the wire is wasted, and you can neglect the mass of the solder. What is the...

A mill wheel 400 kg and radius 2.50 m, with 8 blades diametrically opposed to each other of 3.00 kg each, is driven by a jet of water to a tangential velocity of 5.00 m / s. If a rock off 4 blades diametrically opposed, what will be the final tangential velocity of the treadmill? My question is...

Homework Statement A student of weight 656 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from the seat is 581 N. (a) What is the magnitude of N at the lowest point? If the wheel's speed is...

A 39.0 kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 17.0 m. (a) What is the centripetal acceleration of the child? (b) What force (magnitude and direction) does the seat exert on the child at the lowest point of the ride? (c) What...

Homework Statement A bicycle wheel has a diameter of 63.8 cm and a mass of 1.79 kg. Assume that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 117 N is applied tangent to the rim of the tire...

How much Newtons is needed to turn a wheel with radius 1 meter and mass of one kilogram and width of 1cm, exerting force on the outer circumference of the wheel and assuming no friction occurs?

Homework Statement A constant horizontal force F of magnitude 10N is applied to a wheel of mass 10 kg and radius 0.3 m. The wheel rolls smoothly and the acceleration of its center of mass is 0.6 m/s^2. What is that frictional force on the wheel?The Attempt at a Solution ok so the frictional...

The radius of each wheel on a bicycle is 0.400 m. The bicycle travels a distance of 3.0 km. Assuming that the wheels do not slip, how many revolutions does each wheel make? This problem seems so simple but none of the possible answers available seems correct. My work r = 0.4 m x = 3...

Homework Statement A circular-motion addict of mass 80 kg rides a Ferris wheel around in a vertical circle of a radius 10 m at a constant speed of 6.1 m/s. (a) What is the period of motion? What is the magnitude of the normal force on the addict from the seat when both go through (b) the...

Hello everybody, Well I'm a level 4 mechatronics students from Mauritius and doing my project on a self balanced bicycle which uses a flywheel to achieve this.A better view of it can be seen on: OR EVEN ON: http://www.youtube.com/watch?v=0312BNqIBFI&feature=related...

Homework Statement A wheel is attached to a fixed shaft, and the system is free to rotate without friction. To measure the moment of inertia of the wheel-shaft system, a tape of negligible mass wrapped around the shaft is pulled with a known constant force F. When a length L of tape has...

Just before finals you decide to visit an amusement park set up in the Metrodome. Since it is a weekend, you invite your favorite niece along. She loves to ride on a Ferris wheel, and there is one at the amusement park. The Ferris wheel has seats on the rim of a circle with a radius of 25 m. The...

ok this was a problem in my book and the answer apparently is 29N. I have the diagram and pictures below. I know that the pivot point will be the edge of the block that is touching the outside of the wheel. When the wheel is in equilibrium the sum of the torque will=zero so i can set up the...

what is the difference between wheel shimmy and wheel wobble?...in certain books it said they meant the same..

Hi, first sorry for my bad English, I am more skilled to read than to write in English I don't know if this is the right section for this topic. The problem is described in the title of the topic. My guess is that each of the two wheels goes on with circular trajectory around a same...

Hello, I love rides but the one that thrills me is Ferris Wheel. Today, while I was enjoying the ride, I noticed something that's really interesting. When I reach the top and fall rapidly, it seems as if I am loosing gravity and also something unexplainable happens in the abdomen. Please...

(Q) What torque is applied to a steering wheel of an automobile when the driver applies a force of 50 Newtons tangent to the circumference of the wheel? Diameter of the steering wheel is 40 cm. F = 50 N D (torque arm) = 0.40m T= Fd = 20 N... but its wrong... any ideas...

Homework Statement I have to find the mass m of a person riding a ferris wheel sitting on a bath scale. Given data: R=16 m Scale reading on top of ferris wheel = 510 N Scale reading at bottom of the ferris wheel= 666 N Homework Equations F=ma For uniform circular motion we have...

Homework Statement Consider a wheel of a landing airplane. The wheel has mass M, radius R, and moment of inertia around its axis \alphaMR^2. The wheel lands on the ground with horizontal velocity v, but does not rotate before it touches the ground. (a) Calculate the velocity of the wheel when...

Homework Statement i've attched a picture of the wheel, which need to calculate moment of intertia with respect to 8 rods. i've tried to use stiener rule but it's not getting the answer, moment of wheel is (m1*r^2)/2 moment of rod is (m2*r^2/3) i use the rule i total = icm + mr^2...

Homework Statement A wheel of radius b rolls along the ground with constant forward acceleration a0. Show that at any given instant, the magnitude of the acceleration of any point on the wheel is (a0^2 + (v^4 / b^2))^(1/2) relative to the center of the wheel. Here v is the...

How can I calculate the amount of energy I would get if I spun a wheel at a certain about of RPM? I know this is a general question, but I am looking for any kind of calculation I can use.

Hi, this problem’s been bugging me for ages. I’m sure it’s just a simple misunderstanding somewhere on my behalf but I just can’t seem to get my head round it. Homework Statement A monorail car with front wheel drive and mass of 5 tonnes is suspended from two wheels 10m apart as shown. Its...

Hi everyone, I hope I have posted in the right place. I'm a commerce student and have absolutely no idea about mechanical stuffs. My father has an idea in mind which he would love to implement. He too is a commerce student. Hence, I need some help from you'll to see if this is really practical...

Hello. This question has kept me up all night: What mechanism would keep a wheel spinning using as little electrical energy as possible? Let's say we have a toy car (could be anything that involves a wheel) that is already in motion and moving with a constant velocity. What would you build...

I had a friend share an idea with me, and i said it was wrong, but he wouldn't believe me, mostly because I'm a layman and couldn't give more evidence than 'if it was that easy someone would've thought of it', or 'it's too close to perpetual motion which is impossible'. The idea is you have...

Suppose there is a rotating wheel at constant angular speed, i.e, 1000 RPM (Revolution Per Minute). What is the torque of Earth at certain location? The equator should have the maximum torque value. I find the angular speed w by 1000 x 2Pi rad x 1 / 60s = 104.71 rad/s Assume M is the mass of...

A friend and I somehow got on this odd topic and we disagree on the answer. Here's the scenario we were thinking of. If we had 2 wheels that had the same physical dimensions of diameter and width, and the only difference was a considerable difference in mass, would one wheel spin longer on an...

Could someone verify that my thinking is correct, or point out the mistakes if it is incorrect? I'm trying to figure out where energy goes when rolling a cylinder down an incline. It is initially stationary. 1) First, assume there is no air resistance. If the surface of the cylinder and the...

Recently I was thinking random thoughts and thought to myself, if there was a windmill like wheel with powerful magnets on each blade, would it spin? Here is a poorly drawn picture to help explain myself: http://imageshack.us/photo/my-images/191/magneticwheel.png/ [WARNING -- a user has...

A picture that seems to show up a lot in high school physics is one like this: http://www.kollewin.com/EX/09-15-03/electromagnetic-spectrum.jpg There's the wide range of electromagnetic waves at different frequencies, of which we can only see a narrow band. My question is, why do red and...

Hello everyone, I have a project of mine where I need to find out the force that acts on a wheel to start it rolling and keep it rolling so I can then select the correct motor and gear box. I have not had to do this kind of physics for years and I am having trouble with this problem: If a...

Hello, I am currently designing a steering wheel and I'm in need of some advice. I can't seem too find a suitable button for my paddle shifters. I am looking for a button that gives defined user feedback and that takes a bit of force to push it, but it also have to be reasonable size. If...

Homework Statement A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +43 N·m is applied to the wheel for 20 s, giving the wheel an angular velocity of +610 rev/min. The external torque is then removed, and the wheel comes to...

Hi everyone, I need to model a crank sensor with a flying wheel in Maxwell. Crank sensor is made of permenant magnet, pole piece (to concentrate the magnetic field), and coil. There is a space between the target wheel and the crank the sensor. What I have to do is to simulate the output...

Homework Statement A potter's wheel—a thick stone disk with a radius of 0.450 m and a mass of 128 kg—is freely rotating at 52.0 rev/min. The potter can stop the wheel in 5.95 s by pressing a wet rag against the rim and exerting a radially inward force of 82.0 N. Calculate the effective...

Homework Statement The moment of inertia of a fly wheel about it's axis is 20 kg m2. A constant torque of 40 N m is applied to the initially stationary fly wheel. Find it's rotational KE after 3 seconds assuming there is no friction in the system? Homework Equations...

I am trying to determine what the best motor would be for me to achieve an rpm from 0-250 with a maximum 50lb load that is reversible and controllable. I heard DC motors are more variable-speed friendly. If I do need a DC motor, what type AC/DC power supply would I need? Thanks, Neil

Why does the friction force oppose only the rotational motion of the bottom of a wheel? Also, when a wheel is moving down a ramp, why is the friction force UP the ramp when the rotational motion of the bottom wheel is also up the ramp? What is "sliding"? I'm having a real hard time...

Homework Statement Bicycle traveling 20 ft/sec. Moment of Inertia of the front wheel is 0.25 slug*ft^2. Wheel radius is 15 inches. With what angular velocity must the front wheel be turned about a vertical axis to counteract the capsizing torque due to a 120 pound person being 1 inch...

I'm sorry for posting another thread but I'm totally lost here.. Homework Statement A wheel and axle having a totel moment of inertia of 0.002kgm is caused to rotate about a horizontal axis by means of an 800g mass attached to a cord wrapped around the axle. The radius of the axle is 2cm...

Homework Statement A wheel starting from rest accelerates at 1.2 rad/s² counterclockwise. A) How long does it take to turn through 60 revolutions? B)What is the rotational speed at that time? 2. The attempt at a solution I converted 1.2rad/s² to 1.885 rev/s² by dividing by 2πrad (2...

Homework Statement Question is here. http://i.imgur.com/WOy0w.png Homework Equations Torque=FR The Attempt at a Solution 1) 1)I thought it is radius. But radius is not one of the option 2)I thought this is radius too. 3)Not sure about this question,maybe get torque get...

Hi folks, In a tutorial I was given this problem on which I've been trying to solve these last 2 day with non luck. The Problem is attached with a diagram. I tried to take the torque as being T=mg-mR\alpha^{2} but it was all in vein. Any help would be much appreciated Thanks...

Hi, The problem attached is a kinetic problem. problem # 50. This is from belts friction that this question is from. All my other problems have dealt with static, and now with kinetic, I am stuck on what to do. There is no impending motion that I know. Would I take the rope with the 45...

ok, so i am not exactly sure how to do the math required to figure this out, and you can make fun of me if you wish, but what is the energy expended by a turning wheel of a car, and could that energy be harnessed and stored, all while driving down the road?

Hello, I have a three robots which consists of two motorized wheels and a skid wheel. The two motorized wheels are on the front of the robot. I am trying to find the change in heading of the robot based on the previous state. I have found out that ΔHeading = [(ΔDL-ΔDR)*radius of...

Homework Statement A man of 80.0 kg is standing in the cabin of a Ferris wheel of radius 30.0 m rotating at 1.0 rpm. What are the forces that the feet of the man exert on the floor of the cabin when he reaches the highest point and the lowest point? Homework Equations Newton's Second...