Speed, rpm & acceleration explained: Difference between revisions
No edit summary |
|||
| (One intermediate revision by the same user not shown) | |||
| Line 10: | Line 10: | ||
The rear sprocket is bolted to the rear wheel. If the rear sprocket turns once, the rear wheel will also turn once. | The rear sprocket is bolted to the rear wheel. If the rear sprocket turns once, the rear wheel will also turn once. | ||
So, no matter if you're Valentino Rossi or Meatloaf, if you're going the same | So, no matter if you're Valentino Rossi or Meatloaf, if you're going the same rpm you'll be doing the same speed. Weight has nothing to do with rpm or speed. | ||
====Acceleration==== | ====Acceleration==== | ||
| Line 16: | Line 16: | ||
This is where weight matters. Acceleration is the change in speed over time and is determined by the amount of force over the mass trying to speed up [http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l3a.html (a=F/m)]. If we consider the force to be strictly the same (see above), then the more we increase the mass, the smaller the ratio becomes, and the less acceleration we have. In other words, the more you weigh, the slower you accelerate. | This is where weight matters. Acceleration is the change in speed over time and is determined by the amount of force over the mass trying to speed up [http://www.glenbrook.k12.il.us/GBSSCI/PHYS/CLASS/newtlaws/u2l3a.html (a=F/m)]. If we consider the force to be strictly the same (see above), then the more we increase the mass, the smaller the ratio becomes, and the less acceleration we have. In other words, the more you weigh, the slower you accelerate. | ||
Along with mass, acceleration is limited by resistance. A larger person will have a larger drag profile. For example, Ru Paul is a much larger man than Chris Rock and also weighs more. Therefore, Chris Rock will accelerate much faster than Ru Paul. Once our demonstrators hit 11,000 | Along with mass, acceleration is limited by resistance. A larger person will have a larger drag profile. For example, Ru Paul is a much larger man than Chris Rock and also weighs more. Therefore, Chris Rock will accelerate much faster than Ru Paul. Once our demonstrators hit 11,000 rpm in 6th gear, though, they will both just be a blur. Two blurs going the same speed. The difference is, Chris will get there faster. | ||