Q1:- A 25 mm diameter cylinder and 300 mm long, because of its own gravity force at a uniform rate of 0.1 m/s inside a 25.1 mm tube diameter. An oil film between the cylinder and the tube, its viscosity 0.3 Pa.s. Find the relative density of the cylinder?

Problem 2 The apparatus sketched in the figure below serves as a viscometer i.e. it can be used to measure the viscosity of a liquid. In the drawing, D is a large reservoir containing a viscous liquid A and E is a cylindrical tube of radius R, open at both ends, surrounding and coaxial with B, which is a cylindrical "bob" of radius êR that is dragged up through the fluid by a frictionless pulley system (C) utilizing a weight W. Determine a design equation that relates the viscosity of the liquid to the geometry of the system and the weight W. Hint: you can assume that the length of the cylindrical tube is sufficiently long for the flow to reach steady state. W E D B

You have a container like the one shown in figure 1 from which you want to extract liquid with the help of asiphon (inverted U-shaped tube). The siphon should be filled initially, but once this is done theliquid will flow until its level drops below opening A. The liquid has a density ?, and anegligible viscosity. Assume that the area of ​​the container is very large compared to the area of ​​thetube and that both the tube at C and the container itself at D are open to the atmosphere. a) Using Bernoulli's equation and comparing points "D" and "C", determine the speed with which the liquid flows in C. b) What is the gauge pressure of the liquid at the highest point (B)? c) What maximum height H can the highest point (B) of the tube have without ceasing to have flow? d) If the liquid of density ? is changed, for one with density ?2 where ? < ?2, will there be any change in velocity at C? If there is any change, write down with which liquid the highest speed is obtained in C, otherwise…

Please I want answer for this question - 2 . Many Thanks