Thread: Best Wheel Grip?
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Unread 23-06-2002, 22:38
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#0047 (ChiefDelphi)
  
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Re: Mu Master 2000
Posted by Eric Reed at 1/10/2001 1:43 PM EST


Coach on team #481, NASA Ames / De Anza High School, from De Anza High School and It could be you!.


In Reply to: Mu Master 2000
Posted by Joe Johnson on 1/10/2001 5:59 AM EST:



I think the angle of the ramp last year was 15 deg, right? There were certainly robots that could push other full weight robots up the ramp. So it seems that it should be practical to move the goals. Is 75 pounds really the weight of a goal?

: Along with this question, I have another.

: If a train weighing 130 pounds is headed up a 14 degree incline pulling two 75 pound cars, what is the mininum coefficient of friction (mu) that the train can have between its wheels and the tracks?

: My answer: .53 assuming all wheel drive -- it is worse if only one set of wheels is driving.

: Teams that plan on just driving up that sea-saw without much thought are in for a surprise!

: Joe J.





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