Wheel Definition and 840 Threads

I am trying to understand all of the forces involved in a vehicles wheel, The weight of the auto on the wheel downward would be radial load, and the force 90 degrees from that would be the thrust load directly perpindicular with the wheel. What I learned is that there is an equal reacting force...

Hi all, In the attached image I have a cylinder shaped wheel with a air pocket embedded near its edge. The wheel has the same density as water and is fully submerged in a tank of water. Also the wheel is only free to spin about its center axis. If the wheel is rotated down the air pocket will...

OK. Our department at college has a question... none of us are science teachers. A tractor and cart, all with different sized wheels, which travels fastest? The answers are available are for any of the wheels ( smallest to biggest) or for all being the same? My argument is, if the...

I've been trying this problem for a while now and can't seem to get the given answer. I know I'm probably making an elementary mistake somewhere but I can't find it. Homework Statement A track is mounted on a large wheel that is free to turn with negligible friction about a vertical axis. A...

What determines if something is rotating? For example, if we have a spaceship with a fake gravity rotation thing, how do we know if the outer ring is rotating or if it is stationary and the inner axle is spinning? Normally we could just say its all relative, etc, but weather or not you feel...

I'm sure this is a dumb question, hence why I ask people of da netz. So, when a car wheel spins slow/medium speed, you can see it make revolutions. But then it goes faster, you cannot see it make individual rotations. Duh. I get that...but why does it appear to spin slowly BACKWARDS? I...

Hello, I'm wondering if someone can help with a little question I have regarding bicycle wheel size and the work associated with keeping it moving. I'm trying to understand how changing the wheel size (effective circumfrance) from 26" to 29" may impact the ammont of effort required by a bicycle...

A rotating wheel requires 4.7 s to rotate through 33.5 rev. Its angular speed at the end of the 4.7 s interval is 45.5 rad/s. What is its constant angular acceleration? Assume the angular acceleration has the same sign as the angular velocity. Answer in units of rad/s2...

Homework Statement The balance wheel of an old fashioned watch oscillates with an angular amplitude π rad and period of 0.500 s. Find the maximum angular speed of the wheel. Homework Equations There are a lot of equations in this chapter and I don't even know where to start :confused...

Homework Statement A potter's wheel having a radius 0.55 m and a moment of inertia 11.6 kg·m2 is rotating freely at 55 rev/min. The potter can stop the wheel in 8.0 s by pressing a wet rag against the rim and exerting a radially inward force of 66 N. Find the effective coefficient of kinetic...

Almost everything is clear to me as far as the reason for the precession of a bicycle wheel suspended by a string from a rigid support is concerned. But I don't understand one thing about it. There are 2 forces acting on the system- one is the downward force of gravity at the center of mass of...

Homework Statement All masses and radiuses given. (lets say 1m and 1kg for all) A vertical wheel is free to spin without friction. Mass placed at the edge of the wheel (ie level with the centre) and is released, causing it to accelerate due to torque: O'question asks what the vertical...

Homework Statement A motor keep a Ferris wheel (with moment of inertia 8.95X10^7 kg X m^2)rotating at 6.3 rev/hr. When the motor is turned off, the wheel slow down (because of friction) to 3.5 rev/hr in 25 s. What was the power of the motor that kept the wheel rotating at 6.3 rev/hr despite...

Homework Statement A motor keep a Ferris wheel (with moment of inertia 6.22 × 107 kg · m2) rotating at 14 rev/hr. When the motor is turned off, the wheel slows down (because of friction) to 9.3 rev/hr in 28 s. What was the power of the motor that kept the wheel rotating at 14 rev/hr despite...

Homework Statement A 70cm diameter wheels accelerates uniformly from 160 rpm to 280 rpm in 4.00s. Determine: a) it's angular acceleration, and b) the radial and tangential components of the linear acceleration of a point on the edge of the wheel 2.00s after it has started accelerating...

The problem 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 moment...

Homework Statement The given information is: A Ferris wheel with a radius of 9.0 m rotates at a constant rate, completing one revolution every 37 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.22 rad/s^2 when the passenger is at the top of the wheel. (1) Find the...

Homework Statement A man sitting on the edge of his seat on a Ferris Wheel has a mass of 50.0 kg. The Ferris Wheel has a radius r=30m and the ferris wheel completes a single revolution every 20 seconds. Find the force between the man and the chair. Homework Equations FNET=ma...

Homework Statement A constant horizontal force Fapp of magnitude 10N is applied to a wheel of mass 10kg and radius .3m. The wheel rolls smoothly on the horizontal surface, and the acceleration of its center of mass has magnitude .6 m/s2 (a) In unit-vector notation, what is the frictional force...

1. At a county fair there is a betting game that involves a spinning wheel. As the drawing shows, the wheel is set into rotational motion with the beginning of the angular section labeled "1" at the marker at the top of the wheel. The wheel then decelerates and eventually comes to a halt on one...

Homework Statement A bicycle has wheels of radius 0.25 m. Each wheel has a rotational inertia of 0.096 kg* m2 about its axle. The total mass of the bicycle including the wheels and the rider is 79 kg. When coasting at constant speed, what fraction of the total kinetic energy of the bicycle...

in Fig., the winch cable windings T is the constant rate of 1.5m / s. if the block on which is mounted the wheel is fixed, determine the speed of block A. http://s3.amazonaws.com/answer-board-image/2010321836426340315180237062507416.jpg

Homework Statement A 24.6 g pebble is stuck in the thread of a 28.7 in tire. If the tire can exert an inward radial friction force of up to 19.3 N on the pebble, how fast will the pebble be traveling with respect to the center of the wheel when it flies out tangentiall? Homework Equations...

Homework Statement So if a person's apparent weight at the top of a ferris wheel is 0N find the time it takes the ferris wheel to make on rotation. Then find the apparent weight of a person at the bottom of the ferris wheel for the same person on the same ferris wheel?Homework Equations...

Homework Statement Basically the problem is asking me to find the rate of rotation of a space station that is in the shape of a wheel 120m in diameter, and rotates to provide an "artificial gravity" of 3.00 m/s. And it has to be in rev/min. Homework Equations The only equation so...

Homework Statement A wheel with spokes rolls without slipping on the ground. You take a picture with a stationary camera from the side of the wheel. Because the wheel is moving and the camera has a nonzero exposure time, the spokes are usually blurred. At what points in the picture do the...

Consider a spoked wheel of radius r. The instantaneous tangential velocity of a point on the rim is v. A test particle in the form of a small bead that can freely slide along a spoke when released, is placed as close to the axis as possible so that for the sake of argument its radial...

Homework Statement A mischievous young man riding a ferris wheel decides to release a beanbag as he passes the top point in the ride. The ferris wheel has a radius of 3.39 m and goes around once every 0.95 minutes (or 57 seconds if converted). The bottom of the wheel is 1.03 m off the ground...

Homework Statement A 60cm diameter wheel is rolling along at 20m/s. What is the speed of a point at the front edge of the wheel? Diameter - .6m Velocity - 20m/s Answer - 28m/s Homework Equations v = r(omega) Pythagorean theorem The Attempt at a Solution I tried to get...

I got a small 16inch folding bike weight 13kgs and managed to shed it down to 9kg and working in weight reduction further... eg using hollow shaft at the peddle and using clips at the axles and replacing to 14inch rims and redoing the frame in lighter stainless 201 - these are my next to-do...

Homework Statement Given a Ferris wheel that rotates 5 times each minute and has a diameter of 19 m, with the acceleration of gravity as 9.8 m/s^2, what is the centripetal acceleration of a rider? Answer in units of m/s^2. (There's a diagram that shows a ferris wheel with radius 9.5 m spinning...

1. A giant wheel, 40 meters in diameter, is fitted with a cage and platform on which a man can stand. The wheel rotates at such a speed that when the cage is at the top of the wheel, then the force exerted by the man on the platform is equal to his weight. The speed of the man is: 2. T + mg...

I'm trying to describe the cycloid described by a wheel rolling inside a circle: The (rotor)vector attached to the center of the rolling wheel is described by this equation: r = r cos(w t)e(x') + r sin(w t)e(y') w is the angular velocity of the wheel, e(x') and e(y') are the unit vectors and t...

Homework Statement A large hollow hamster ball is rolling along the ground at 5 miles per hour. A hamster is running inside, matching his pace at the bottom of the ball to stay by the ground. The hamster weighs .3 kg, and the ball has a mass of 1.5 kg with a radius of 0.4m. Homework...

Homework Statement A rotating wheel requires 3.05 s to rotate through 37.0 revolutions. Its angular speed at the end of the 3.05 s interval is 97.1 rad/s. What is the constant angular acceleration of the wheel?Homework Equations Well from basic calculus I know that acceleration is equal to...

I'm tasked with designing a 12 VDC (from lead storage batteries) to 24 VAC (peak to peak, sinusoidal, and unregulated) 300 Watt converter. This will be a consumer quality product--something to do with solar panels. Rather than completely reinvent the wheel, I thought I could find something...

Homework Statement A wheel of radius 0.358 m is mounted on a frictionless horizontal axis. The rotational inertia of the wheel about the axis is 0.0421 kg·m2. A massless cord wrapped around the wheel is attached to a 3.21 kg block that slides on a horizontal frictionless surface. If a...

hello can you tell analyze please the force that is used to round the wheel of a car? I mean, how is this force called? is it torque? also, how does wheel characteristics affect the needed force to maintain a specific rotation speed? eg wheel weight, dimensions (both diameter and...

Could someone aid my understanding of the factors involved here? The question that has been rolling (pun intended) around my mind is in regards to a trend in mountain biking. The new thing in MTBing is the 29" wheel. Standard wheel diameter is 26". Advocates of the 29er say there is less...

Homework Statement find the moment of inertia of a disc of diameter D that spins freely at 40 revs/min, then reduces to 30 revs/min when a mass m is added to the disc at x from the centre. I know m, x, both angular speeds, and the diameter of the disc. Homework Equations L = Iw I =...

Homework Statement How much work is required to accelerate a horizontal wheel of mass 1150 kg from rest to a rotational rate of 1 revolution in 5 seconds Homework Equations I = 1/2(m)(r^2) Rotational KE (ie work) = KE2 - KE1 Rotational KE = (1/2)(I)(Omega Squared) The Attempt at a...

Homework Statement If the load placed in the wheel barrow weighs 20 N and is 40 cm from the wheel, what force must be applied to the handles at a distance of 120 cm in order to balance the load? Homework Equations Tau = F r Sin(theta) The Attempt at a Solution Im really just...

Homework Statement suppose that you can lift no more than 450N unaided. a) how much can you lift using a 2 m long wheel barrow? assume that the wheelbarrow weighs 80N and that its center of gravity is .6m from the wheel. in addition, assume hat the load carried in the wheelbarrow is also...

Homework Statement A wheel rotates with a constant angular acceleration of 3.71 rad/s2. what angle does the wheel rotate between t = 2.00 s and t = 6.25 s? Homework Equations \omega=\omega_{i}+\frac{1}{2}\alpha t^{2} Δθ = θf - θi = ωit + αt2 The Attempt at a Solution I found...

Why is it that a vehicle travels further when skidding with locked wheels than when decelerating with rolling, braked wheels in conventional, non-abs vehicles.

Homework Statement The figure below shows a Ferris wheel that rotates three times each minute. It carries each car around a circle of diameter 19.0 m. a) What is the centripetal acceleration of a rider? Answer in m/s^2 (b) What force does the seat exert on a 40.0 kg rider at the...

Spinning "tornado" wheel - circumference and radius Another quote from my current lecture "elgant universe": Page 63, 3rd Paragraph This doesn't make much sense to me. While I can comprehend that the ruler must be shortened as it's layed out tagentially to the circumference, as it's moving...

I've been working on a simulation of a Lorenz Waterwheel, and friction was killing it - I couldn't use realistic coefficients of friction. The problem, I discovered was that I was not using the correct equation to calculate the force of friction that counters the wheel's rotation. Having...

Homework Statement An electric motor can accelerate a Ferris wheel of moment of inertia 11300 kg · m2 from rest to 9.6 rev/min in 14.6 s. When the mo- tor is turned off, friction causes the wheel to slow down from 9.6 rev/min to 8.37 rev/min in 7.23 s. Determine the torque generated by the mo-...

Homework Statement A bicycle with a speed 12 km/h is driving along a leveled wet road. How much ahead the front axle (see picture) does the wheel jet the water that it picks up from the floor?The radius of the wheel is r = 35 cm. Let’s suppose that the drops of water that are separating from...