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Old   June 5, 2016, 02:45
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armin najarian
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i have a boat that it has 6 degree of freedom and i want to give it an external force in the direction of the longitudinal axis of the boat? (instead of modeling its propeller)
so i need to write an expression for the external force and as i said my problem is 6dof.
at first i wanted to define a coordinate that moves with the rigid body. but i could not define coordinate like that.
so how should i give the boat an external force that always be in the direction of the longitudinal axis of the boat?
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Old   June 15, 2016, 06:48
Federica Biano
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Sorry, wrong section
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external force

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