This java applets try to show : How to add two vector A and B into vector C

C = A + B = B + A

1. There are two methods to form a vector
1. Vector A/B originate from center of the window
Left click anywhere inside the window to form vector A or B
2. Vector A/B originate from where you first click the button
Drag and lift the left mouse button to form vector A or B
Vector will move to center of the window.
2. The program will show you how to add two vector A and B into C

C = A + B	or	C = B+ A
C = A - B	or	C= -B + A

A - B can be transformed to  A +  (-B)

3. press reset button or right click the mouse button to reset.
Parameters are reset to default values.
4. select info checkbox to show more information.
X,Y components of each vector ...


How to process more than two vectors :
 

SUM	= A + B + C + D
ヾ	= (A + B) + (C+D)
ヾ	= E+ F
ヾ	E = A + B and F= C + D

Could you figure out how to process SUM = A + B + C ?

How to form a 3_D vector

Move the mouse with the window will establish a vector at X-Y plane.

Left click the mouse, then drags it up/down to change the Z components.

Then release the mouse button

Another vector C = A + B will show up.

Drag near the origin to change the its position.(displacement)

Your suggestions are highly appreciated! Please click hwang@phy03.phy.ntnu.edu.tw

Author：Fu-Kwun Hwang, Dept. of physics, National Taiwan Normal University