Question: Consider a plant whose drag coefficient, Cd , is given by the equation Cd = - . 0 8 7 * In ( Re )

Consider a plant whose drag coefficient, Cd, is given by the equation Cd=-.087*In(Re)+1.34 where Re is the Reynolds number. Remember Reynolds number is defined as the velocity times the
diameter of vegetation divided by the kinematic viscosity of water, 1*10^-6(m2/s). The vegetation can be approximated as a cylinder with a diameter, D, of 4.1 cm and height of 22cm. The vegetation
is uprooted when the force on the vegetation exceeds 3.7 Newton. Determine at what velocity the drag force exceeds the uprooting force?

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