For Problems 6 and 7. Parabolic mirror can be created by placing a bucket full of...
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For Problems 6 and 7. Parabolic mirror can be created by placing a bucket full of epoxy resin on a turntable rotating at constant RPM, while letting the epoxy cure. Let us consider an epoxy with the following properties: density = 1120 kg/m, dynamic viscosity = 0.195 Pa.s. The turntable is rotating at 90 RPM. Here we are only interested when the initial transient flow disturbances have died down, and the system has reached a steady state, while the epoxy is still in its fluid state. -0.1m Question 7 Turntable _h=? P6. Calculate the height of the epoxy top surface, h, at a radius r = 10 cm. Express your answer in cm. Note that the height of the epoxy top surface is measured from the lowest point on that surface that occurs on the axis of rotation, as shown, which is also the origin of our coordinate system. 5 pts P7. Calculate the shear stress Tro, in N/m^2, at B (z=0, r=0.1m), where indicates the tangential direction. For Problems 6 and 7. Parabolic mirror can be created by placing a bucket full of epoxy resin on a turntable rotating at constant RPM, while letting the epoxy cure. Let us consider an epoxy with the following properties: density = 1120 kg/m, dynamic viscosity = 0.195 Pa.s. The turntable is rotating at 90 RPM. Here we are only interested when the initial transient flow disturbances have died down, and the system has reached a steady state, while the epoxy is still in its fluid state. -0.1m Question 7 Turntable _h=? P6. Calculate the height of the epoxy top surface, h, at a radius r = 10 cm. Express your answer in cm. Note that the height of the epoxy top surface is measured from the lowest point on that surface that occurs on the axis of rotation, as shown, which is also the origin of our coordinate system. 5 pts P7. Calculate the shear stress Tro, in N/m^2, at B (z=0, r=0.1m), where indicates the tangential direction.
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