picture a rotating hub with inner workings where it creates a centrifugal force. Does this arrangement cause a load on the rotating hub....meaning if this hub was on the ground does centrifugal force impedes how fast or slow this hub moves on the ground? Picture a upright rotating wheel.........but don't pay any mind to what force is rotating it (gas engine, or electric motor etc). I am only interested in whether centrifugal force impedes rotation and if so how much......a formula would do.
2006-11-27 04:41:11 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
Given a rotating hub or wheel all the centrifugal forces are along the radii from every point on the hub to the center. Because of circular symmetry, all the these forces will cancel; one pointing up is cancelled by one pointing down. Therefore the net external force is zero; there is no way the linear motion is influenced.
2006-11-27 04:46:09 · answer #1 · answered by Gene 7 · 0⤊ 0⤋
This is what is called a "mechnical capacitor."
The load will not be on the hub. The force will be directed to the outer edge of the rotating device.
Assuming that the hub is a portion of a wheel construct. You will observe two things:
1. The energy required to overcome the force holding the centrifrugal masses will be proportional to the energy lost in the device as a consequence of the hub.
2. The energy required to decelerate will also increase proportionally.
In other words, energy is stored as the device rotated faster and released as the device is slowed. The bearing surfaces will see little to no increase in load if they are "perfectly" balanced but mechanical systems seldom are.
2006-11-27 14:36:55 · answer #2 · answered by BeReal 1 · 0⤊ 0⤋
Well... loading the hub is going to increase it's rotational inertia and make it more difficult to accelerate and decelerate, just as if you had used a heavier hub.
2006-11-27 12:48:32 · answer #3 · answered by st3f 2 · 0⤊ 0⤋