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 Author Topic: EJS version of Vector addition (sum of two vectors)  (Read 9382 times) 0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
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 « Embed this message on: October 11, 2009, 02:59:59 pm » posted from:Taipei,T\'ai-pei,Taiwan

This is EJS version of vector addition.

The applet shows how vector $\vec{C}=\vec{A}+\vec{B}$ was calculated.
1. Calculate X,Y components of vector $\vec{A},\vec{B}$,
$\vec{C}_x=\vec{A}_x+\vec{B}_x$ and $\vec{C}_y=\vec{A}_y+\vec{B}_y$
2. If you un-check x-y mode:
The sum is equal to sum of parallel components of $\vec{A},\vec{B}$ in the direction of $vec{C}$,
$\vec{C}=\vec{A}_p +\vec{B}_p$
and the normal component of $\vec{A},\vec{B}$ always cancel out with each other. i.e.
$\vec{A}_n+\vec{B}_n=0$ or $\vec{A}_n= -\vec{B}_n$

You can select to operate in C=A+B , A=C-B or B=C-A mode.

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