Originally Posted by
ricohman
Interesting. The reason I included the HR and cadence as that is my lowest gearing. If I was spinning 110 rpm on the big ring and the 12, I would probably have the gearing to ride at 60kmh. That is, if I even could do that.
I just wanted to know if the perceived effort would be the same.
If you were spinning at 110rpm and your relative speed against the wind is 60kmh, then yes, perceived effort should be the same, regardless of if it's 10kmh/50kmh (ground/headwind speed), 20/40, 30/30, etc. But it sounds to me like there are two questions here. One is a physics question, the other about biomechanics.
The physics question has been answered. Now, assuming you have the same forces applied against you, the next question it sounds like you're asking is about cadence. The biomechanics of your body are more efficient at different cadences, and not everybody is the same. There have been a couple of studies done on this if you're interested in reading up.
http://www2.bsn.de/Cycling/articles/cadence.html