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Author Topic: Coriolis effect  (Read 16515 times)
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Fu-Kwun Hwang
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on: June 15, 2013, 11:13:48 am » posted from:,,Satellite Provider

In physics, the Coriolis effect is a deflection of moving objects when they are viewed in a rotating reference frame. In a reference frame with clockwise rotation, the deflection is to the left of the motion of the object; in one with counter-clockwise rotation, the deflection is to the right.
The following simulation help you visualize the Coriolis effect!


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lookang
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Reply #1 on: February 12, 2018, 12:03:34 pm » posted from:SINGAPORE,SINGAPORE,SINGAPORE

I have recreated a JavaScript version of this simulation
http://iwant2study.org/ospsg/index.php/interactive-resources/physics/02-newtonian-mechanics/05-circle/623-coriolis2d

enjoy!


* Screen Shot 2018-02-12 at 11.24.46 AM (2).png (148.24 KB, 1920x1080 - viewed 362 times.)
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Reply #2 on: February 18, 2019, 02:40:11 pm » posted from:SINGAPORE,SINGAPORE,SINGAPORE

Dear Prof Hwang,

I think I fixed a bug

//x3=x-y*Math.sin(c); //Rotating with Disk Viewpoint apparent trajectory
//y3=y-y*(1-Math.cos(c));
x3=x+y*Math.sin(c); //Rotating with Disk Viewpoint apparent trajectory MUST change to + instead of -
y3=y-y*(1-Math.cos(c));
//if(y<-R)_initialize();
if(y<-R)_pause(); // added pause by lookang
//vx3=vx-y*w*Math.cos(c)-vy*Math.sin(c);
//vy3=vy-y*w*Math.sin(c)-vy*(1-Math.cos(c));
vx3=vx+y*w*Math.cos(c)+vy*Math.sin(c); // differentiate
vy3=vy-y*w*Math.sin(c)-vy*(1-Math.cos(c));

Then the rotation is correct



* Screenshot 2019-02-18 at 8.52.11 AM (2).png (1847.09 KB, 1920x1080 - viewed 82 times.)

* Screenshot 2019-02-18 at 8.53.03 AM (2).png (857.44 KB, 1920x1080 - viewed 81 times.)
« Last Edit: February 18, 2019, 02:42:29 pm by lookang » Logged
Fu-Kwun Hwang
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Reply #3 on: February 19, 2019, 06:29:09 pm » posted from:,,Satellite Provider

Very good. Thanks!

 Cheesy
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