XPost: alt.home.repair, alt.sci.physics, uk.d-i-y
From: CFKinsey@military.org.jp
On Thu, 24 Jan 2019 23:14:20 -0000, NY wrote:
> "Steven" wrote in message
> news:gauuddFbvofU1@mid.individual.net...
>>
>>
>> "Commander Kinsey" wrote in message
>> news:op.zv457rk6wdg98l@desktop-ga2mpl8.lan...
>>> On Thu, 24 Jan 2019 21:26:37 -0000, Steven wrote:
>>>
>>>>
>>>>
>> When say it decides you are falling backwards, and moves back,
>> while you are standing on it, the complete assembly of you and
>> the scooter moves back and it doesn't change where it is relative
>> to the person's center of gravity.
>>
>>> Let's say you're stood stationary and upright on it, not moving. Now,
>>> you lose your balance a little and begin to fall over backwards. Your
>>> feet tilt backwards, the device senses this, and moves backwards. You're
>>> now still over the device
>>
>> Yes, but it can't move under the center of gravity while your feet are
>> still on it.
>
> You've forgotten Newton 3: "for every action, there is an equal and opposite
> reaction".
>
> It moves the wheels by the motor exerting a torque on them. This causes an
> equal and opposite torque on the scooter-and-human, thus moving the person's
> C of G relative to the axle until the C of G is once again directly over the
> axle. This is how it corrects for the person leaning too far forwards or
> backwards.
>
> If the person leans back, the sensors detect that the scooter is tipping
> backwards, and rotates the wheels backwards, thus tipping the person
> forwards.
He's a thick Australian, and has changed name again. He gets really upset
when I don't talk to him. His real name is "Rod Speeed" (with two Es - if I
used two my newsreader would remove the thread).
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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