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Unread 16-12-2008, 12:41
Andrew Schreiber Andrew Schreiber is offline
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Re: pic: VEX High Reduction Gearbox

Quote:
Originally Posted by squirrel View Post
If not for that pesky friction....
Also inertia

Someone please correct me if I am wrong but wouldn't you be fighting a force of 1/12(mass)(3*radius^2 + height^2) * 244140625 Newtons to get it started? Now, maybe if you put a crazy long lever arm on the small wheel's shaft you could over come that.

Of course, even that number is almost nothing compared to the real number because you would have to account for starting the gears rotating too. This could be an interesting problem for more advanced students, What is the max length of a lever arm you could attach a 100 kg weight to and still not have the large wheel move? Have them run it both ways.

But very cool John.
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Last edited by Andrew Schreiber : 16-12-2008 at 12:42. Reason: My sentence structure was bad.
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