XPost: alt.home.repair, alt.sci.physics, uk.d-i-y   
   From: CFKinsey@military.org.jp   
      
   On Thu, 24 Jan 2019 21:26:37 -0000, Steven  wrote:   
      
   >   
   >   
   > "Commander Kinsey"  wrote in message   
   > news:op.zv43lzx3wdg98l@desktop-ga2mpl8.lan...   
   >> On Thu, 24 Jan 2019 20:43:14 -0000, Steven  wrote:   
   >>   
   >>>   
   >>>   
   >>> "Commander Kinsey"  wrote in message   
   >>> news:op.zv40t1vfwdg98l@desktop-ga2mpl8.lan...   
   >>>   
   >>>> I tried one, once, I couldn't stay on it.  I see countless Youtube   
   >>>> videos   
   >>>> of people falling off them.  But why?  If you are about to fall over   
   >>>> backwards, shouldn't it feel the tilt of your feet and simply roll under   
   >>>> your centre of gravity?   
   >>>   
   >>> Not possible with your feet still on it.   
   >>   
   >> What isn't possible?  It moving under you or you falling off it?   
   >   
   > "simply roll under your centre of gravity" while ever your feet are still on   
   > it.   
      
   Why would that not be possible?  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 and don't fall off it.  The more you tilt over, the   
   faster it goes, moving your feet so they're under your centre of gravity, thus   
   you don't fall.   
      
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