Tuesday, April 24, 2007

Scribe


Question:



A ship needs to travel in the direction of 40°. The ship has a speed of 20 Knots in still water. A current of 6 Knots at 360° is pushing the ship. Determine the direction the ship needs to be headed, and the magnitude of the ship's resultant velocity.



Solution:



First you have to understand what each vector means and where to put it.






Then you plug in the angles and sides what you already know









The vectors form a letter "z" so the angles correspond with one another.



You then plug in your answers into the calculator



Calculator Functions:



  • Go to your TRISOLVE2 program in your calculator

  • Enter angle AB as 120°

  • Enter side A as 6

  • Enter side B as 20

  • Press 3 to solve



You will then end up with this:






Plug in the answers to your original diagram. Your diagram should look something like this






You then subtract 44.941° from 20° to calculate the bearing which is your final answer!



BEARING 24.9°



Anyway i hoped that helped everyone understand this problem a little better! The next scribe is JOWELL

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