Just out of curiosity, what exactly are you trying to figure out?JotaBg wrote: ↑November 19th, 2020, 4:19 pmThanks both
Sorry for not using the right units, I have a weak background in physics
So, as a conclusion, my understanding is that a similar force per stroke will produce a higher power (per stroke) readout at a higher stroke rate
I tried it this morning. A few strokes at a 20 spm applying a certain force and a few strokes applying more or less the same force but in this case at a 12 spm approx. Even though I applied a similar force, the wattage per stroke was much lower when the spm were reduced. Does this make sense?
Remember, as was stated above (and sticking with translation instead of rotation, because it's easier to understand)
Work = Force x Distance
Power = Work / unit time
That and the knowledge that we're force-limited (which is one of the reasons we ramp up stroke rate to get to a higher pace - the force our muscles can put out is limited, so we tax our cardio vascular system more by using a limited force more often to compensate - just like revving a smaller engine to higher RPMs to get to higher horsepower) is really all you need to worry about when it comes to understanding the physics part of going faster on the rower.
Continuing the engine analogy: Horsepower = Torque x RPM / 5,252 (where TQ is Ft-lbs)
Assuming the Torque curve is flat, if you can double the RPM you'll double the HP.
Same idea on the erg, with stroke rate instead of RPM.