4. Consider two plates with fluid in-between. The top plate moves at a constant velocity of1.5 m/sec and the bottom plate remains at rest. The fluid is SAE 30 oil.

Assuming a linear velocity profile for the oil, constant shear stress everywhere and the area of the plates is0.5m2, determine the shear stress and the shear force on either plate due to the fluid resistance? (10 points)

Fig: 1

Fig: 2