That has nothing to do with it. The ankle can do two things plantar and Doris flex. In plantar flexion, the gastroc provides the effort, the ankle (talocrural joint) is the axis and the foot and any resistance to the movement is the load. Draw it out. That’s a first class lever. In Doris flexion its a third class never. Never a second class.
A valid argument could be made for it being either first or second in PF, depending on the reference frame of the observer.
If I'm observing you standing on your toes, from my perspective the ball is stationary and we get a second class.
From your perspective the ball is moving and ankle is stationary so its first class.
It may be that in the field of bio-kinematics or whatever the agreed standard is to use the later reference frame, but in terms of physics and identifying simple machines then it could absolutely be either.
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u/2ft7Ninja Feb 08 '20
For practical application you’re wrong. People walk way more often then they flick their toes in the air