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Tuesday, June 26, 2007
June is almost ending, so, I decided to finally write here what I should: the steps!
These are only based on my understanding of it, so blame me not if it's not that uber correct.
GRAPHICAL METHOD:
[Not that accurate but is waaay easier.]
1. Choose a scaling for your measurements. e.g., 10 m = 1 cm
2. Draw whatever was instructed on the given problem.
3. Connect the tail of the first vector to the head of the last.
4. Measure the last line drawn and convert it using the scale chosen. For the angle, use a protractor.
COMPONENT METHOD
[Is more accurate but makes your head bleed.]
1. Using the appropriate SOH CAH TOA equation, find the x-component and the y-component for each vector.
3. Add up both x-components, (one from each vector), to get the total of x-component.
3. Add up both y-components, (one from each vector), to get the total y-component.
4. Add the total x-component to the total y-component, then use the Pythagorean theorem to get the size and direction of the total.
5. To get the angle, use the formula... theta = tan-1 (Ay/Ax).
P.S. Well, it always is easier said than done. Knowing the steps plus a scientific calculator at hand doesn't really guarantee you a perfect score on a quiz... So, I guess I'm saying goodbye for now.Labels: Required Post
posted by Karen Ann Labsan at 5:19 AM
... DROP DEAD ...
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