# Yahoo Web Search

related to rotation

1. Sort by

1. ### How to accurately control fan speed in rotations per second?

...control it just by turning the voltage up or down. You could then sense the rotations with a frequency counter or oscilloscope, and manually adjust the power supply to get the ...

3 Answers · Science & Mathematics · 06/01/2019

2. ### affect on journal bearing On Sudden stoppage or slowing down or forced reverse rotation?

Journal bearings work because the rotation of the shaft drags lubricant under the shaft, so the shaft floats on a...

2 Answers · Science & Mathematics · 30/07/2009

3. ### axis of rotation ??

... perfectly balanced object's axis would then be in the center of the rotation.

1 Answers · Science & Mathematics · 26/09/2007

4. ### Fluid Mechanics, Rotation, 10 points?

...where, x2 and x1 are the distances of the legs from the axis of rotation!! Thus, x1 = 5; x2 = 10 dz = z2 - z1 = 20 - 12 = 8 ==> 8 = (w^2 / 2g...

2 Answers · Science & Mathematics · 25/03/2010

5. ### How do I calculate the rotations per inch of a helix given the Helical angle (45 Degrees) and Dia. (1 in.)?

...slope of the line is given by: tan(ϴ) = rise/run = (length of one rotation)/(inches per rotation) which is: tan(ϴ) = (πD)/(inches...

2 Answers · Science & Mathematics · 17/02/2012

6. ### Matlab rotation using vectors and sin/cos?

...plot =. I find it redundant to create that x vector holding each x value for rotation, and in the beginning creating 4 x variables. Matlab...

1 Answers · Science & Mathematics · 02/04/2012

7. ### Dynamics of Rotation?

Dynamics of Rotation is a part of physics that study Velocity,tuque, Dispatch ......... in a Rigid matrial.

1 Answers · Science & Mathematics · 22/04/2009

8. ### what should be the magnitude of the rotation of the blades of a wind mill to produce electricity?

The rotational speed is designed to be directly proportional to the size of the windmill, that is to the radius of a blade-tip from the axis of rotation. The tip-speed of rotation of the blade should be about the same as the average speed...

2 Answers · Science & Mathematics · 03/08/2009

9. ### sense rotation and angle of rotation on robot?

...shaft encoder. These can be from a 360 degrees potentiometer (with continuous rotation) and accuracy 0.1% to some sort of optical device with even higher resolution and...

1 Answers · Science & Mathematics · 27/12/2012

10. ### how do you do a 90 degree CW and CCW rotation?

...the hands moving from 12 to 3. That is a 90 degree rotation CW. From 3 to 6, or 6 to 9 or 9 to 12, they are all also...

2 Answers · Science & Mathematics · 28/06/2009