The paint stirrer shown in Fig. P9.94 consists of two circular disks attached to the end of a thin rod that rotates at \(80 \mathrm{rpm}\). The specific gravity of the paint is \(S G=1.1\) and its viscosity is \(\mu=2 \times\) \(10^{-2} \mathrm{lb} \cdot \mathrm{s} / \mathrm{ft}^{2}\). Estimate the power required to drive the mixer if the induced motion of the liquid is neglected.

Figure P9.94

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00 in. -1.5 in. 80