Ewen Posted March 14, 2008 Share Posted March 14, 2008 A fly, a bee and a moth are stuck to Supra. The fly is stuck to the tread of a tyre, the bee is stuck to the crank pulley belt, the moth is stuck to the windscreen. The tyre has a diameter of 32", the crank pulley belt is 32" long. The Supra is doing 100mph, at 5000 rpm.... Which insect is moving the fastest ? Link to comment Share on other sites More sharing options...
Pot Posted March 14, 2008 Share Posted March 14, 2008 The tyre has a diameter of 32" That's some big wheels!... Link to comment Share on other sites More sharing options...
Hermit Posted March 14, 2008 Share Posted March 14, 2008 The Bee, I reckon. Link to comment Share on other sites More sharing options...
Guest CoolsBlue Posted March 14, 2008 Share Posted March 14, 2008 crank pulley! - bee Link to comment Share on other sites More sharing options...
Pete Posted March 14, 2008 Share Posted March 14, 2008 32" x 5000 = 160,000 inches a minute * 60 = 9,600,000 inches an hour 1 mile = 63 360 inch so 9,600,000 / 63,360 = 151.51 mph ? So that makes the fly and bee joint...but what happens to rubber at that speed? Does it stretch a little maybe? In which case the fly will be a little ahead? I can't imagine any of them would survive though Link to comment Share on other sites More sharing options...
MrRalphMan Posted March 14, 2008 Share Posted March 14, 2008 Maybe we should ask which one has more fun? Link to comment Share on other sites More sharing options...
Havard Posted March 14, 2008 Share Posted March 14, 2008 I would imagine being strapped to any one those parts isn't going to be fun, especially at 100 mph.... Surely the question should have been, which one will vomit first? I'll go for the fly as they vomit over everything!! H. Link to comment Share on other sites More sharing options...
Blackie Posted March 14, 2008 Share Posted March 14, 2008 32" x 5000 = 160,000 inches a minute * 60 = 9,600,000 inches an hour 1 mile = 63 360 inch so 9,600,000 / 63,360 = 151.51 mph ? So that makes the fly and bee joint...but what happens to rubber at that speed? Does it stretch a little maybe? In which case the fly will be a little ahead? I can't imagine any of them would survive though God you're good Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted March 14, 2008 Share Posted March 14, 2008 is this out on a public roads? I hope not! very irresponsible driving. Maybe mods should move this to members only. If its on a rolling road that rules the moth out. Link to comment Share on other sites More sharing options...
MrRalphMan Posted March 14, 2008 Share Posted March 14, 2008 Do you not think it could take off it's on the rolling road? I'll post a poll and see what everyone else thinks.. Link to comment Share on other sites More sharing options...
Ewen Posted March 14, 2008 Author Share Posted March 14, 2008 32" x 5000 = 160,000 inches a minute * 60 = 9,600,000 inches an hour 1 mile = 63 360 inch so 9,600,000 / 63,360 = 151.51 mph ? So hes travelled 151.51 miles sideways in an hour. Hes also travelled 100 miles forwards in an hour. Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted March 14, 2008 Share Posted March 14, 2008 Its the Bee Bee - flaps its wings 230 beats per second Fly - flaps its wings 200 beats per second Moth - duno ,but I guess its much slower. Link to comment Share on other sites More sharing options...
Schtuv Posted March 14, 2008 Share Posted March 14, 2008 The bee will have the greatest angular momentum, but does that directly equate to velocity? Would that couple with the forward motion, though? The pulley belt coordinate directional component, if memory serves, wouldn't match that of the car. Link to comment Share on other sites More sharing options...
DamanC Posted March 14, 2008 Share Posted March 14, 2008 They have the same Schtuv. They both have the 'extra' foward motion Link to comment Share on other sites More sharing options...
Schtuv Posted March 14, 2008 Share Posted March 14, 2008 They have the same Schtuv. They both have the 'extra' foward motion This hangover isn't helping me remember how to do maths - lol Link to comment Share on other sites More sharing options...
AndrewOW Posted March 14, 2008 Share Posted March 14, 2008 Ah, but will any of those insects take off at that speed? Link to comment Share on other sites More sharing options...
garetheves Posted March 14, 2008 Share Posted March 14, 2008 Surely if the car is moving at 100mph then so are all the insects Link to comment Share on other sites More sharing options...
Soop Dogg Posted March 14, 2008 Share Posted March 14, 2008 The speed of the fly (stuck to the tyre tread) will depend on when you measure it. At the bottom of the tyre, when it is in contact with the road, it will instantaneously be stationary, while at the top of the tyre, it will be travelling forwards at it's maximum speed of 200mph. I doubt the bee on the cambelt (travelling a helical path) would ever reach the same maximum speed. If you were to ask which would have the highest average apeed, this might result in a different answer.... Link to comment Share on other sites More sharing options...
Pete Posted March 14, 2008 Share Posted March 14, 2008 I'm looking for the dumb ass answer and I think I've got it. None of them are "moving" - the stuff they're sat on is. Is that right? Depends on your definition of movement. Moving in relation to what? The Earth? The road? The tree they just passed? Link to comment Share on other sites More sharing options...
Pot Posted March 14, 2008 Share Posted March 14, 2008 Nerds, the lot of you... Only because I thought about it and my brain hurt... Link to comment Share on other sites More sharing options...
Ian Ian Posted March 14, 2008 Share Posted March 14, 2008 Heads hurting now !! .............who cares anyways LOL Cheers -Ian- Link to comment Share on other sites More sharing options...
Hermit Posted March 14, 2008 Share Posted March 14, 2008 32" x 5000 = 160,000 inches a minute * 60 = 9,600,000 inches an hour 1 mile = 63 360 inch so 9,600,000 / 63,360 = 151.51 mph ? Ah, but... the belt doesn't do a full turn per revolution of the crank, it depends on the diameter of the crank pulley. Link to comment Share on other sites More sharing options...
Matt H Posted March 14, 2008 Share Posted March 14, 2008 So many variables. crank belt lol, think about how gears work, its all about the diameter of the crank. Its all relative too, wants the constant we are measureing against? I'd go with the one on the tyre if its relative to the road say Link to comment Share on other sites More sharing options...
SupraStar 3000 Posted March 14, 2008 Share Posted March 14, 2008 does Ewen know the answer or is he just doing are heads in? Link to comment Share on other sites More sharing options...
RedM Posted March 14, 2008 Share Posted March 14, 2008 I'm finding the plight of the insects very moving. Link to comment Share on other sites More sharing options...
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