The maximum blood pressure in the upper arm is 120 mmHg. A vertical tube open to atmosphere is connected to the vein. If blood density is 1050 kg m⁻³, find the height to which blood rises in the tube.
Physics · Fluid Mechanics
JEE Mains Advanced

Question

The maximum blood pressure in the upper arm is 120 mmHg. A vertical tube open to atmosphere is connected to the vein. If blood density is 1050 kg m⁻³, find the height to which blood rises in the tube.

Physics · Fluid Mechanics

G1 Physics · Accepted Answer

Step 1: Use hydrostatic equilibrium, P₂−P₁ = ρgΔh; in an accelerating fluid replace g by the effective acceleration where required. Step 2: Equate pressures at the same horizontal level or integrate pressure over the stated surface. Applying these relations to the given data gives 1.55. Final answer: 1.55.