Wheel Definition and 865 Threads

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 A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of 50N_m is applied to the wheel for 20s, giving the wheel an angular velocity of 600rev/min. The external torque is the removed and the wheel comes to rest 120s...

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 [/B 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...

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...

1. I do not even know where to start here, any help is much appreciated A flywheel (a) with a mass of 100 kg and radius of gyration 1200mm rotates at 150 revs min^-1 (clockwise). The kinetic energy of this flywheel is to be reduced by 20% by impacting it with a second flywheel (b) rotating at...

4. A train is moving with a speed of 31.4 meters second . One of the major wheels of the locomotive has a radius of 0.5 meters. (a) How many revolutions does the wheel make in a second if the center of the wheel advances by 31.4 meters? (b) A piece of chewing gum, weighing 20.0 grams, is...

Homework Statement Motorcycle is accelerating from the rest with a constant acceleration a = 2 m/s². We are observing its front wheel (see picture) after a time t = 10 s. This wheel is not slipping while accelerating. How much are velocities of points A, B, and C on rim of wheel? How much...

Homework Statement Motorcycle is accelerating from the rest with a constant acceleration a = 2 m/s². We are observing its front wheel (see picture) after a time t = 10 s. This wheel is not slipping while accelerating. How much are velocities of points A, B, and C on rim of wheel? How much...

Homework Statement A wheel rotating with a constant angular acceleration turns through 22 revolutions during a 9 s time interval. Its angular velocity at the end of this interval is 15 rad/s. What is the angular acceleration of the wheel? Note that the initial angular velocity is not...

I have spent a while trying to work out a simple equation to give me the driving force of the engine in a car using the inputs: Power, wheel radius and rpm but when I put in real numbers from a production car, I get low values of 2197N. The equation I have derived is: Driving force =...

Homework Statement A Ferris wheel with radius R turns with a constant angular velocity \omega. A child rides the Ferris wheel with a fresh ice cream cone. When the child reaches an angular position \varthetas [see diagram below], she is so distracted that she tips the cone and drops the nice...

What is the magnitude of the acceleration of a speck of clay on the edge of a potter's wheel turning at 63 revolutions per minute if the wheel's diameter is 34 cm? Just give 2 sig figs.I understand that to find VELOCITY ofo the speck of clay, I'd need to find the circumference of the circle...

Homework Statement How many revolutions per minute would a 15.1 m diameter Ferris wheel need to make for the passengers to feel "weightless" at the topmost point of the trip? Homework Equations The Attempt at a Solution I assume this problem has something to do with finding...

Homework Statement While at the county fair, you decide to ride the Ferris wheel. Having eaten too many candy apples and elephant ears, you find the motion somewhat unpleasant. To take your mind off your stomach, you wonder about the motion of the ride. You estimate the radius of the big...

On a Ferris Wheel A chemistry student with a mass of 75 kg is riding a steadily moving Ferris wheel. When she is at the top of the Ferris wheel, the normal force from the seat on to her body has a magnitude of 550 N. a) What is the magnitude of the normal force on her body when she is at...

Hi all, I am trying to calculate the the torque of a system which uses various size wheels to transfer power. Explained: A motor, of 100Nm torque, 40000 rpm, has a shaft of 7mm diameter in contact with a wheel 20mm in diameter. This wheel is in contact with a 15mm wheel. I need to...

Homework Statement A chemistry student with a mass of 75 kg is riding a steadily moving Ferris wheel. When she is at the top of the Ferris wheel, the normal force from the seat on to her body has a magnitude of 567 N. What is the magnitude of the normal force on her body when she is at...

Homework Statement A bicycle is rolling down a circular hill that has a radius of 9.00m. The angular displacement of the bike is 0.960rad. The radius of each wheel is 0.400m. What is the angle (in radians) through which each tyre rotates ? Notes on question : - wheels are in rolling...

Homework Statement A wheel of radius r is rolling along a muddy road with speed v, and particles of mud are being continuously thrown off from all points of the wheel. ignoring air resistance, what is the trajectory of a mud glob thrown off the wheel when it is at angle (theta) to the...

How is a sliding wheel is opposed by static friction? Static friction acts only when the body is about to move. My point is if the wheel is has a linear velocity and angular velocity than kinetic friction should act on the body rather than static friction.

Hi guys, I am a complete physics dunce so go easy on me, I can wrap my mind around the basic concepts but I need help with this particular proble,. What I'm trying to do is figure out how much torque is lost or gained by changing wheels on a car. I assume we need to ignore the front two...

Hello! Me and my team are working on a two-wheel simple robot having two motors and 12v 1.5amps supply for a small intra-college robo-race. The wheels are 10cm diam. and we have a cylindrical body between the two wheels with 8cm diam. The setup is all wired, nothing wireless( with the remote...

I'm designing a paddle wheel drive house boat and need to do some calculations to see if the parts I have on hand can do the job. Paddle wheels will be 6' dia. with 8 paddles by 3' long . Paddles will be 3' long by 10" and will have the tops of the paddles submerged by 2" to 3" when the...

Hi all! I've got a problem which I can't solve for almost a week :-/ It's about simulating a car with some physics added. The things is that I cannot calculate the wheel angular velocity right. Let's assume that a car has no velocity and is using 7300 N (1st gear, 1000 rpm) of force on the...

Homework Statement A woman rides on a Ferris wheel of radius 16m that maintains the same speed throughout its motion. To better understand physics, she takes along a digital bathroom scale (with memory) and sits on it. When she gets off the ride, she uploads the scale readings to a computer...

Homework Statement A rotating wheel with radius 40 cm and a connecting rod PQ with length 1.2m. The pin P slides back and fourth along the x-axis as the wheel rotates counterclockwise at a rate of 360 revolutions per minute. Find the angular velocity of the connecting rod, da/dt, in radians per...

Homework Statement [Let a Ferris wheel exist.] The wheel carries 36 cars, each holding as many as 60 passengers of 70kg mass, around a circle of radius R = 38m. The mass of each car is about 1.1e4 kg. The mass of the wheel's structure as about 6.0e5kg, which was mostly in the circular grid...

At t=0 at grinding wheel has an angular velocity of 24.0 rad/s. It has a constant angular acceleration of 30.0 rad/ s2 until circuit breaker trips at t=2.00s. From then on, it turns through 432 rad as ut coasts to a stop at constant angular acceleration. a) through what total angle did the wheel...

Hello: If a person rides on a wheel that has the same speed throughout rotation. Does this mean that magnitude of angular velocity is same throughout rotation? I think if the wheel has the same speed, then the centripetal force is equivalent throughout rotation. Now, the person decides...

Fairgoers ride a Ferris wheel with a radius of 5.00 m . The wheel completes one revolution every 31.0 s If a rider accidentally drops a stuffed animal at the top of the wheel, where does it land relative to the base of the ride? (Note: The bottom of the wheel is 1.75 m above the ground.)...

SOLVED Given initial angular velocity of wheel, find revolutions to rest Homework Statement As a result of friction, the angular speed of a wheel changes with time according to d \vartheta / dt = 4.1e-.088335775t where the initial angular velocity is 4.1 rad/s. Find the number of...

Hi all, Just Wondering quickly, do the static hub caps on a Formula one car(say Brawn GP) bulge out slightly or are the flat and flush with the wheel? If they do bulge out, why does this produce less drag? Thanks Sean

Homework Statement A mass of 0.8kg is attached to a massless string that passes over a pulley and is wrapped around a wheel of radius 0.5m, and rotational inertia 1.0 kgm^2. The wheel can rotate freely. The mass is initially held stationary at a height of 1.5m above the ground. When the mass...

How would I calculate the speed of a spinning wheel (using forces in Newton and anything else required)?

[Solved] Wheel touching a kerb just about to lift. What are the forces on the wheel? Homework Statement In order to lift a wheel over a kerb of height h, a minimum force F is be applied at the axle. The radius of the wheel is R. Draw all the forces on the wheel then find its weight...