The goal is to find a cd value in which the compute

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Reference no: EM13636958

It turns out that the fluid-mechanical drag coefficienput value and the drag coeffeicient depends on Reynolds number, Re, which is defined:

Re=V*D/v(air)

(Here the kinematic viscosity of air, v(air), is about 21x10^(-6) m^2/sec).

(a.) Re Number values for this problem: We need to get a feel for what actually are typical Re numbers for this problem. So to do this, lets assume:

(i) The dropped ball has a D= 1/10 m, &

(ii) A reasonable range for its mass is 1/10 (kg)<M< 10 (kg).
With this value doe D and this range for M, create a MATLAB finction which takes the drag coefficient (Cd) as an input value and plots Re(V(t)), versus mass M.

The goal is to find a Cd value in which the computed Reynolds-number range seems consistent, with the value of Cd used to compute the plot.

(iii) Please provide a MatLab function as well as a plot that has a legend expalining whats what and labeled axis'.

(iv) Explain what value of Cd would be your best choice for this problem and why, (there is not "right" answer here; the goal is to expalin the trade-offs of using one value as opposed to another)

Reference no: EM13636958

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