TG EAMCET 4 May 2025 Shift 1 Paper

The force (F) required to maintain the steady flow of liquid layers is defined by Newton's law of viscosity. This force is directly proportional to the area of contact (A) and the velocity gradient (‌

du

dz

), with the proportionality constant being the coefficient of viscosity (η). Mathematically, this relationship is expressed as
F=ηA‌

du

dz