You must determine what each fluid is and all of the

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You must determine what each fluid is and all of the following values listed in the chart below. You must give complete answers including units, either in Metric or English. After the completion of this exercise list your answer for each unknown liquid. In order to receive full credit your lab report must have all calculations not just answers. If you use references list what reference you used. Cross reference each result with text sources to determine what liquid we are working with. Exercise 1, Part II: Unknown Fluid Exercise Introduction One of the properties of homogeneous fluids is its resistance to motion. A measure of this resistance is known as viscosity. The engineer has to have knowledge of viscosity for a wide range of applications. For example, it would be very important to select a fluid of proper viscosity for the use in a hydraulic machine. Furthermore, viscosity enters into Density Specific Weight Specific Gravity Absolute Visc. Kinematic Visc. MATERIAL AND EQUIPMENT LAB PROCEDURE
16 the calculation of pressure losses through pipes, the determination of pump sizes, the calculation of hydraulic forces, etc. Thus, it is helpful for the engineer to have a physical awareness of viscosity and a background in how viscosity is measured. The measurement of viscosity is generally made with a device known as a viscometer. There are several methods of determining viscosity, one of which will be demonstrated in this experiment, the Falling Ball Viscometer. It is worth noting that viscosity is a measure of relative fluidity at some definite temperature. Since viscosity varies considerably with temperature, it is essential that the fluid be at a constant temperature when a measurement is being made. This viscosity can be measured by several different standardized methods or tests. However, the scope of this experiment will not include the measurement of temperature effects on fluid viscosity. Falling Sphere Viscometer EQUIPMENT: Falling Ball Viscometer 2 unknown liquids. ch Graduated cylinder PROCEDURE: Fill the cylinder with the liquid of unknown viscosity all the way to the top. Drop the sphere into the liquid and nut and adapter assembly is tightened on the flange of the tube until secure. Make sure that the air and gas bubbles should be vented before any readings are taken. The ball is released by turning the knob to raise the screw. The time of descent between the two sets of fiduciary lines is measured with a stop watch. Repeat measurements thrice and take an average reading for the time of descent. CALCULATIONS: For a falling ball viscometer, the viscosity is calculated by the simple formula: where: = Absolute or dynamic Viscosity centipoises (cp); = Density of the sphere(gms/mL) = 8.02 for stainless steel ball; = Density of the liquid (gms/mL); = Time of descent (minutes); = Viscometer Constant (Value of K is: 0.3 for size 1 or 3.3 for size 2 or 35 for size 3).
17 Exercise 2 Pascal’s Law: or Pascal's principle states that the fluid pressure at all points in