4 spheres, each of diameter D= 0.05 m (spheres areidentified as 1, 2, 3, 4), are placed on the end of 4 rods of lengthL = 0.15 m, arranged in a cross pattern as shown in the figure.LThe rigid assembly is free to pivot without friction about theaxis, o, normal to the page. Sphere 1 is covered with roughnessof height ɛ = 0.25 mm while all other spheres are smooth.1With an oncoming velocity of U= 60 m/s, which direction willthe assembly rotate? (Clockwise or counterclockwise). Useappropriate calculations to explain and justify your answer.Density of air is 1.2 kg/m³ and viscosity is 1.5 x 10-5 m²/s.3.

The rigid assembly is pivoted without friction about the axis O. Sphere 1 has covered with the…

Answered: 4 spheres, each of diameter D = 0.05 m…

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