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Let's tie a sphere, drop it into a water and trawl it with a boat. How do we calculate the angle between a vertical line and rope?

Actually I don't know much about aerodynamics and hydrodynamics so I don't know how drag force is calculated from shape, mass and speed of an object. Recently I have started using Simulink and Matlab so it would really help me to get a some formula so I could try to do some model.

Thank you,

Regards,

Niko

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# Aerodynamics and hydrodynamics

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