A sealed journal bearing is formed from concentric cylinders. The inner and outer radii are 25 and \(26 \mathrm{~mm}\), the journal length is \(100 \mathrm{~mm}\), and it turns at \(2800 \mathrm{rpm}\). The gap is filled with oil in laminar motion. The velocity profile is linear across the gap. The torque needed to turn the journal is \(0.2 \mathrm{~N} \cdot \mathrm{m}\). Calculate the viscosity of the oil. Will the torque increase or decrease with time? Why?