Wheel Definition and 865 Threads

Homework Statement Which statement concerning a wheel undergoing rolling motion is true (a) The angular acceleration of the wheel must be zero m/s2. (b) The tangential velocity is the same for all points on the wheel. (c) The linear velocity for all points on the rim of the wheel is non-zero...

Homework Statement The following wheel consists of an outer ring (R) and an inner ring (r). The wheel moves clockwise by a force F applied to the inner ring as shown in the picture to make the wheel roll. Draw the friction force. Homework Equations Nothing The Attempt at a Solution I could...

So let's assume I have 100 Nm at the wheel of a car, with a wheel size of 25 in diameter If I put wheels that are 24 in diameter, so 4% smaller, what exactly will change ? Will I have 4% more torque ?

Homework Statement [/B] The axle of a wheel is mounted on supports that rest on a rotating turntable. the wheel has angular velocity ##\omega_1 = 44.0\; \frac{\textrm{rad}}{\textrm{s}}## about its axle, and the turntable has angular velocity ##\omega_2 = 35.0\; \frac{\textrm{rad}}{\textrm{s}}##...

I have one project of developing setup to lift heavy water at some height. A setup that take less energy as compare to traditional water pumps. I was searching on net and I found giant "water wheels" of ancient times to lift water. Like this one http://en.wikipedia.org/wiki/Norias_of_Hama Is...

Homework Statement The question is as follows: How much force should I apply if i want to have a wheel of mass 2kg and radius R to pass over a step with height h, where R is twice as big as h. I attached a picture of the problem for reference. Homework Equations I am not sure but I think I...

Hi all, I need to calculate the friction coefficient between road and the tyre of the car. I came across few answers like which solves as from the following torque equation. Engine torque = braking torque + acceleration troque + Inertial torque + drag torque + rolling resistance. For...

Homework Statement The problem is Problem 2 on page 3 here: http://ocw.mit.edu/courses/physics/8-01sc-physics-i-classical-mechanics-fall-2010/angular-momentum-1/conservation-of-angular-momentum/MIT8_01SC_problems25_soln.pdf Homework Equations 3. The Attempt at a Solution [/B] My question...

Hi guys, I have one project where I need to rotate heavy mass on big wheel. Parameters Wheel diameter: 43 meter Radius: 21.50 meter Circumference: 135 meter Mass speed: 10 minutes per round Speed: 135 / 600 = .225 m/s Mass: 344,965 kg Drive Type: Track around the wheel like roller coaster...

Homework Statement So for a project, we decided to do tension strings that would be attached to a wheelchair inside a subway so that when the subway decelerates or accelerates, the wheelchair wouldn't move. However, due to our inexperience we used only the wheel and solved for equations. If I'm...

Homework Statement The moment of inertia (I) of the bicycle wheel about the axle, can be obtained graphically using the equation: rm(g-a) = I(a/r)+Frictional Torque. Explain how to form two variables so that, I and Frictional Torque can be obtained from a linear graph. Identify the constants...

Homework Statement [/B] A wheel rolls without slipping on a plane, what magnitudes are conserved? The Attempt at a Solution . [/B] I don't know if the static friction force does any work. Energy won't be conserved if it does.

Hi Guys, I am pleased to join this forum to learn something from experienced guys and thanks in advance for helping me to understand physics. I am trying to design a Ferris wheel with maximum SPEED and maximum PASSENGER capacity. I want to know formula to calculate MOTOR POWER IN KW to rotate...

Homework Statement Bicycle wheel is at rest, and can rotate frictionlessly about a fixed axle. A dart travels at velocity v (in plane of wheel) parallel to a line that goes through the centre of the wheel. It hits the rim of the wheel and sticks. What kinetic energy, if any, is lost during...

A tundra buggy, which is a bus fitted with oversized wheels, is stuck in Churchill, Manitoba, on slippery ice. The wheel radius is 0.84 m. The speedometer goes from 0 to 27 km/h while the buggy moves a total distance of 7.0 m in 9.0 s. Find the magnitude of the total acceleration of a point at...

Homework Statement A Ferris wheel has radius 5.0 m and makes one revolution every 8.0 s with uniform rotation. A person who normally weighs 670 N is sitting on one of the benches attached at the rim of the wheel. What is the apparent weight (the normal force exerted on her by the bench) of...

Homework Statement b) What is the required torque that the engine has to provide for each wheel, to have this acceleration? This is the question and this is the information given. vi = 0 vf = 100km/h mcar = 2100 kg radius wheel = 0,25m mwheel = 18 kg t= 3,4s the wheel has a moment of inertia...

Homework Statement A boat is on a quiet lake 200 m from a paddle wheel that creates waves which pass the boat every 1.8 s with an amplitude of 3 cm. A) If the wave velocity for water waves is 1.5 m/s, what is the wavelength? B) Write an equation for the displacement of the water as a function...

greetings...! I need some correct info for a project I am working on... this site looks like it may well be able to help me . the problem is as follows; I have a 12'ft. wheel that I need to turn at a maximum of 60 rpm. the shaft from the power supply turns at 2300 rpm. what would be the gear...

Homework Statement A point P on a wheel of a bike radius R, P is a distance r from the axle. The speed of the bike is v, what is the speed of the point P as a function of θ? Homework Equations x=R\theta - r \sin\theta y=R - \cos\theta \rho=\frac{r}{R} Distance traveled by the point in one...

Hello, I am really struggling with calculating the final rotation of a spinning wheel. I am not even sure if my equation for changing the velocity of the spinning wheel given a coefficient of friction is even correct so I will post it here... change in angular velocity = angular velocity *...

Is there any formulae available for designing wheel alignment parameters like camber,caster,steering axis inclination and toe in and toe out.

Are there existing tests that NASA specifies that determines the saturation point of a fly wheel? Or must the test be catered specifically to each individual flywheel? -Sorry I'm a bit of a newbie at Aersospace engineering!

does anyone know the formula for calculating the speed a wheel has to be traveling to cover a certain amount of rotations within a minute eg 30rpm, if 2m diameter implies a 3.142 perimeter (x 30) therefore do the wheels move at 94 meters p m (x 60 minutes , in time) = 5.64 kmph or 3.5...

I apologize if this question has been answered before, but I did not find the explanation that I needed. If a torque is applied to a wheel situated on a frictional surface, what forces cause the wheel to roll? I know that if P is the contact point, the static frictional force counteracts...

Hello all, I am currently studying dynamics of a wheel-axle set for my research. My problem is I could not find the same equation for the rate of the change of the momentum in the book, book is a little bit old and I could not find any errata about the book or any other references that...

A small confusion ! Why is most of the mass of the wheel concentrated on the rim ? I know that it is to increase the moment of inertia , but what is the practical use of doing so ? Thanks in advance !

Hello All ! Above is the title of the topic and am looking for inputs. Right now I am working on this as my thesis. And I am looking for some one how have already worked in the similar field for a better guidance for me. Thank you in advance. Regards,

I can not establish the mathematical reason why when a wheel of radius r takes a full revolution it moves 2*pi*r. Can someone help me. Have a nice day.

I m considering to design a solid axle ATV for rear wheel drive without differential...so I want to know about what design considerations I have to consider while its designing.(like track width...suspension linkage position)

Homework Statement Find the mass, M, of a rotating wheel of radius r that has an attached mass, m, suspended by a string using conservation of energy. The mass is suspended a height, h, above the ground and it takes a time of t seconds to reach the ground.Homework Equations U_g,mass = K_f,mass...

Hello guys I want to know how the wheel diameter of car affects the car's performance parameters(physical significance) such as 1)speed 2)torque 3)handling. I would also appreciate if some equations are used to substantiate the physical understanding of these.

i want to move a wheel of vehical in new test rig... i just knw tyre dia. 1.2 m .. load for perticular wheel is 8000 kg... required rpm 354 .. (i.e 80 km/h) then what is torque required for wheel to rotate at 354 rpm..

Dear experts, I am an electrOnics engg and weak in mech parts . please refer to the attached images of this hand machine, The wheel at the top weighs 30 kg and is rotated through hand because of which the horizontal plate attached at the bottom moves down and cuts objects using die placed. I...

Can we use different size wheels in an ATV from stability point of view as they have different masses

Hello fellow PF members, This is my first post. I am wondering if there is a mechanism that alters the gear ratio in worm gear-worm wheel setup.. Something like a variable pitch worm gear that can be used instantaneously to alter the gear ratios. If not for worm gear, is there anything in...

As we read earlier that you can't move a body sitting on it,for you and the body make a total system. And from Newton's 3rd law the action you give to the chair is equal and opposite to the reaction the chair gives you back. So the system has no internal net force acting. But when you sit on a...

Homework Statement Hey all! I'm new here but I think I'll like it. :) I have a question that I can't seem to figure out. Here is the question in short: GIVEN: A wheel of radius 1m on a vertical plane rotates with an angular acceleration of 4rad/sec2. The wheel starts from rest (ωo = 0)...

Suppose there is a hard wheel rolling on a flat surface with friction, will the wheel keep on rolling with constant velocity or stopped by the friction? If it keeps on rolling, it seems that there is always a friction action against its rotation direction. But where does the torque come from...

Hi there, I have a project of torsion bar. I need to know value of force is making a torque on it. So I have a velocity V=40km/h, mass per wheel m=530kg, radius of wheel R=290 mm and heigh of obstacle h = 6 cm. What will be the reaction N, on both axis, of obstacle to tire? I have no idea how...

Suppose that a wheel is rotating around its axis in free space with no friction, with no external forces acting on it. In theory, the wheel will rotate forever with constant angular velocity. This velocity is assumed to be small (essentially non-relativistic). Now, consider an observer O...

Homework Statement A student of weight 667 N rides a steadily rotating Ferris wheel. At the highest point, the magnitude of the normal force on the student from the seat is 556 N. a) Does the student feel "light" or "heavy" there? b) What is the magnitude of Fn at the lowest point...

Is it just equal to the external torque acting on the spinning wheel?

hi guys this is an image of the rear wheel of a push bike going into a corner as well as what i think are relevant forces, i need to calculate the moments or torque at A (the contact patch) and B (the hub centre) this is to calculate the force on the left hand side of the frame and right hand...

A uniform Steel wheel of diameter, D=3m and mass, 8500kg is supported by a low friction bearing, shown as the large black spot in the drawing. Around the outer surface of the wheel, a light wire rope is wound. From the end of this wire rope, a mass, M=1000kg is attached Initially, both the...

Dear Experts A bicycle has the following gear setup. I like to get your advice what is the effective gearing and torque at the rear wheel that is being turned by a electric motor that is turning the whole gear set using a chain. There are 2 gear sizes : small gear and large gear. Their...

From this figure we could see the axis of rotation of wheel is y-axis and it's translational motion is along x-axis How would I describe it's horizontal motion in terms of rotational motion The wheel is spinning and also moving horizontally along x-axis w being the angular frequency

Twelve uniform, thin rods of mass and length are welded together to form a “wheel” as shown in the figure. What is the moment of inertia of this wheel for rotation around an axis through its center and perpendicular to the plane of the wheel? The welds contribute no mass to the wheel. I...

A truck with 32- inch- diameter wheels is traveling in a speed of 15 miles/hour. Find the angular speed of the wheels in radians/minute. How many revolutions per minute does the wheel make? My teacher mentions that we are trying to find the angular speed in this. Another question is how do I...

Homework Statement "Assume you want the car to accelerate towards the right. When a wheel is spinning, the contact point with the ground is moving towards the left. The direction of the frictional force on the portion of the wheel contacting the ground is opposite to the direction of the...