Calculate Drag Force for a 14.7mm Sphere in Oil with Given Parameters

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To calculate the drag force on a 14.7 mm sphere dropping in oil at 0.08 m/s with a viscosity of 0.1 Ns/m² and density of 0.85, the drag force formula F_d = 0.5 * rho * C_d * A * u² is utilized. The Reynolds number (Re) is calculated using Re = u * p * L / μ, where u is the velocity, p is the density, L is the diameter, and μ is the viscosity. The drag coefficient (C_d) for a sphere is approximately 0.47. The calculated drag force is 1.85e-3 N. Understanding these parameters is crucial for accurate drag force calculations.
Tommybc
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A sphere, 14.7 mm in diameter, drops at a rate of 0.08 m/s in oil
µ = 0.1 Ns/m^2 , σ = 0.85 ). Calculate the drag force acting on the sphere.

[Answer: 1.85e-3 N]


F_d=0.5*rho*C_d*A*u^2, Re=u*p*L/μ

I attempted to find the Re, but am struggling on finding the coefficient of drag now. Once I crack this I will be able to progress please help!
 
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