On 18/04/2011 18:11, V G wrote:
> But maybe the power output isn't linear over that time. Maybe the
> power output was maximum at the first millisecond and decreased for the r=
est
> of the second.

This was my point - I'm wondering how accurately they measure the=20
instantaneous power.
For instance, if the power was 10kW for a millisecond then drops to 100W=20
for 999ms, but you were only averaging the power over every second then=20
you will have a reading of ~110W, and never know about the 10kW peak.
Also, I think it does matter about how he gets the mass in the air, and=20
how long it takes, from the point of view of athletic achievement (and=20
interest) For example, almost anyone could lift 500kg using a pulley,=20
jack or lever - the same energy is expended but over a longer=20
period/distance. Or a weightlifter could lift in very small increments,=20
taking a rest in between each one. As Gehard also pointed out, with=20
other types of lift one usually uses the weight of the body and trades=20
energy with the weight to be lifted, making it harder to calculate the=20
instantaneous power.
I'm just curious to know how quickly/accurately the readings are taken,=20
and also whether they account for the current momentum of whatever is=20
involved. "They" is sports equipment manufacturers or anyone who may be=20
involved in similar research.


--=20
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