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is there a bug in the acceleration vector in the world view in polar coordinate system?

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is there a bug in the acceleration vector in the world view in polar coordinate system?
lookang Avatar
lookang
222 Posts

Dear Doug, thank you very much for creating this wonderful tool, which it i have created with many teachers and students open educational resources in Singapore. http://iwant2study.org/ospsg/index.php/component/tags/tag/60-tracker

 

i notice in the circular model i built to fit the real life data of a fan, the acceleration vector is fluctuating in length (magnitude) as well as direction ( towards the center of the circular path). i speculate is not correct as the theory suggests a vector of equal magnitude and pointed towards center of circular path.

the right size graph of a vs t is constant ( which is correct).

maybe the Tracker 4.92 currently calculates the vector of a incorrectly in polar coordinates thus resulting in the view as in attached picture?

 

Post edited February 16, 2016 at 11:56 PM EST.

Attached File: 2016-02-17_1248.png


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