Shown to the right is a truncated cone of length L cm traveling through a fluid

Question

Shown to the right is a truncated cone of length L cm traveling through a fluid at a speed of 8.86 mis. The narrow end of the cylinder has a diameter of 2.22 cm, whereas the wider and has a diameter of 3.37 cm The drag force acting on the cylinder is 29.1 newions. The drag force Fa acting on an abject passing through a fluid is given by where A is the effective cross-sectional area of the object, r (the Greak letter "gamma") is the drag coeficient, p is the density of the fluid, and v is the speed of the abject Calculate the drag ooefficient r of the object if the fluid is water of density 100000 kg/m 0.89

Explanation / Answer

F = 0.5*(rho)*A*(gamma)*v^2
29.1 = 0.5*1000*pi*(0.0037/2)^2*gamma*8.86^2
gamma = 68.989

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