# Answer on Mechanics | Relativity Question for Vonn Mesina

Question #19433

Blood in the arteries is flowing, but the effects of this flow can be ignored and the blood can be treated as static fluid. estimate the amount by which the blood pressure P2 in the anterior tibial artery at the foot exceeds the blood pressure P1 in the aorta at the heart when a person is

a) Reclining Horizontally

b) Standing

Given:

density = 1060 kg/m^3

height = b/wn the heart and foot = 1.35m

a) Reclining Horizontally

b) Standing

Given:

density = 1060 kg/m^3

height = b/wn the heart and foot = 1.35m

Expert's answer

a) when horizontally, P2 = P1,difference = 0;

b) when standing, P2 = P1 + density*g*height;

P2 - P1 = density*g*height = (1060 kg/m^3)*(9.8 m/s^2)*(1.35 m) = 14 000 Pa

Answer: (a) 0, (b) 14 kPa

b) when standing, P2 = P1 + density*g*height;

P2 - P1 = density*g*height = (1060 kg/m^3)*(9.8 m/s^2)*(1.35 m) = 14 000 Pa

Answer: (a) 0, (b) 14 kPa

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