A titanium cylinder having a diameter of 50 mm in diameter and 540 mm long falls inside a vertical tube 50.5 mm in diameter. The density of the titanium cylinder is 6846 kg/m3 . The space between the cylinder and the tube is a film of glycerine at 15oC with a viscosity of 0.567 Pa-s. What is the speed of the cylinder as it falls the tube?

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Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.