3. A cylindrical body with a diameter of 50 mm and a length of 100 mm falls freely in a 60 mm diameter cylindrical tube as shown in the figure. The space between the cylindrical body and tube wall is filled with oil of viscosity 0.1 Pa.s. Determine the velocity of the body if its weight is 1.6 N.
60 mm
50 mm
Oil
Cylindrical body
100 mm
Oil
W = 1.6 N
Circular tube