Food Rheology and Texture

In a coaxial cylinder (Couette) rotational viscometer with narrow annulus gap $\Delta r = 0.001\text{ m}$, the inner cylinder of radius $R = 0.02\text{ m}$ rotates at $\omega = 10\text{ rad/s}$ ($v = R \omega = 0.2\text{ m/s}$). The shear rate in the fluid gap $\dot{\gamma} = v / \Delta r$ in s$^{-1}$ is: