33at a distance x from center there is a thin cylinder of unifrom velocity wx.. whose velocity at top is wx and at base is 0... from here try to find viscous force...
A thin horizontal disc of radius R=10 cm is located within the cylindrical cavity filled with oil whose viscosity is ∩ =0.08P. the clearance between the disc and horz. planes of the cavity is equal to h=1.0mm.Find the power devoloped by the viscous forces acting on the disc when it rotates with angular velocity=60 rad/sec?
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