A man is standing up in aircraft that has a constant accerelation upward. Find the maximum accerelation that heart can't pump blood to brain. Head is 50cm above the heart. Pheart=100mmHg
ΣF=ma
Fn-mg=ma
Fn=m(g+a)=ρ(blood)V(g+a)
Pfoot=ρ(blood)H(g+a)
Pheart=Pfoot-ρ(blood)(H-0.5)(g+a)
I don't know...
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