what is the circumfrence and radius of a penny farfing bicycle?
83230
There was no set dimensions for the Penny Farthing bike, however: The front bicycle wheels ranged in diameter from 42" to 60" with rear wheels from 14" to 18" or 20" (inchs)\n\nso Radius would be half the diameter\ncircumference would be Pi (3.14) multiplied by the diameter
1036638
http://www.sheldonbrown.com/gears.html
1137640
For a road bike, look at something in the range of 56cm to 58cm.  For a mtn bike, look at something in the range of 16.5 in to 18 in.
759847
Fir the first question, you need to determine how many revolutions per second that is.\n\nSince one revolution is 2 * Pi radians, divide 4.60 radians per second by 2 * Pi to get the number of revolutions per second:\n\n4.60 / (2 * 3.14159) = 0.7321 revolutions.\n\nEach full revolution of the forward sprocket would pull a length of chain equal to the circumference.  Thus one complete revolution of the forward sprocket would pull a length of chain equal to (2 * Pi * radius) which is to say (2 * 3.14159 * 9) = 56.5486 centimeters of chain.\n\nThus, 0.7321 revolutions per second would pull (0.7321 * 56.5486) centimeters of chain per second, which is 41.3992 centimeters per second.\n\nReducing digits to account for significant figures, call it 41.40 centimeters per second is the linear velocity of the chain.\n\nCentripetal accelleration is velocity squared divided by radius, so (41.40 cm/s)^2 / 5.10cm:\n\n(41.40 cm/s)^2 / 5.10cm\n(1713.96 cm^2/s^2) / 5.10cm\n336.07 cm/s^2
522790
Circumference = 2*radius*pi\n\nTherefore, the radius is 30\n\nand the diameter is 60..\n\nHope that helps...
970313
r=radius\nd=diameter\n\n1 C=2r(pi)\n2 C=d(pi)\n\n(Same thing because 2r=d)
1024156
Circumference is 25,000 miles.  the diameter is about 7,950 miles, just under 8,000 miles (the earth isn't quite a sphere, it is a little pudgy at the equator, so the diameter varies slightly for our "oblique spheroid" which isn't a perfect sphere).
44824
find the circumference using C=2(pi)r. r is half of the diameter, so thats 2 times pi times 112.5. this is your distance. speed is distance over time. so now you need to convert minutes to seconds so you can get it in m/s. so you do 10 x 60 and that's 600 seconds. so you just divide the circumference divided by 600 and thats your answer.
880603
penny farthing, also called "highwheeler" or "boneshaker"\n\nyou can still buy them, new ones:\nhttp://www.hiwheel.com/\n\nI rode one, years ago. Modern bikes are definitely better.
702361
ok biker bike, here we go.\n\nacc.= g = 9.8 m/s2, (any object moving in air will have this acc. or retardation)\n\nb) we apply formula\ns=ut + 1/2at^2\nu=20\nt=4\ns=20*4 + 1/2 *9.8 *4*4\n  =158.4 m\n\nc) v=u + at\n  therefore, t= v-u/a\n                   =50-20/9.8\n                   =3 seconds (approx)
896595
http://local.wasp.uwa.edu.au/~pbourke/geometry/2circle/\n\nit tells you how
281759
3454.3615403812755165920718499567 centimetres cubed
622311
Simple ratio where C is the full circumference\n24/360 = 16pi feet/C\n24C = 360*16pi\nC = 15*16pi\nC = 240pi\n\nFrom the circumference you can easily derive the radius:\nC = 2pi r\n240pi = 2pi r\n240 = 2r\nr = 240/2\nr = 120\n\nThe radius is 120 feet
724518
Road bikes are measured from the center of the bottom bracket (BB) to the top tube (TT) under the saddle.  This section of the bike frame is called the seat tube.  Trek will have a list of dimensions on their website that you can look at.  They build bike frame proportional to the average riders size.  So as the frame size goes up, the seat tube length and the top tube length will increase in length.  A quality bike shop will be able to fit you properly.  I suggest test driving a few different bikes at a couple different shops to get a good idea of what you like.  Every bike rides and feels different because they use different components or the way the frame is built and they type of material used.
836396
circumference= 2*r*pi\nwhere r is the radius and pi is approximately 3.14
221158
A good site is Weight Weenies.  Shows the weight of many bicycle parts.
267872
braxton_paul is a little mixed up.\n\nUsing an electronic scale accurate to 1/10 of a gram, I found the mass of a penny (from 2002) to be 2.5 grams.