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Homework Help: Calculate the drag force

  1. Feb 28, 2014 #1
    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!
  2. jcsd
  3. Feb 28, 2014 #2


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