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--- repository:charged_balloons [2020/03/24 02:16]
porcaro1 [Answer Key]
+++ repository:charged_balloons [2020/03/24 02:37]
porcaro1
@@ Line 29: / Line 29: @@
   * Model two charged balloons hanging from strings, incorporating the effects of gravity
 ===Code===
+<code Python [enable_line_numbers="true"]>
+GlowScript 2.7 VPython
+#get_library('https://rawgit.com/perlatmsu/physutil/master/js/physutil.js')
+#Define some things
+k=9e9 #electrostatic constant
+t = 0 #time counter
+dt = 0.00005 #time increment
+x1 = -5 #x location for charge 1
+y1 = 0 #y location for charge 1
+z1 = 0 #z location for charge 1
+m1 = 9e-31 #mass or charge 1
+x2 = 5 #x location for charge 1
+y2 = 0 #y location for charge 1
+z2 = 0 #z location for charge 1
+m2 = 9e-31 #mass or charge 2
+c1 = sphere(pos=vec(x1,y1,z1), color = vec(1,0,0)) #create charged particle 1
+c2 = sphere(pos=vec(x2,y2,z2), color = vec(0,1,0)) #create charged particle 2
+r12 = c1.pos-c2.pos #distance  between charge 1 and charge 2
+c1.charge = 1.6e-19 #charge on charge 1 - note the sign of the charge
+c1.vel = vec(0,0,0) #initial velocity of charge 1
+c1.accel = vec(0,0,0) #initial acceleration of charge 1
+c2.charge = -1.6e-19 #charge on charge 2 - note the sign of the charge
+c2.vel = vec(0,0,0) #initial velocity of charge 2
+c2.accel = vec(0,0,0) #initial acceleration of charge 2
+#loop to move charged objects
+while mag(r12) = 0:
+   rate(1000)
+   c1.eforcec2 =       #electrostatic force of charge 2 on charge 1
+   c2.eforcec1 =       #electrostatic force of charge 1 on charge 2
+   #add electrostatic force arrow to charges
+   attach_arrow (c1, "eforcec2", shaftwidth = .2, scale = 1e30, color = vector (1,0,0))
+   attach_arrow (c2, "eforcec1", shaftwidth = .2, scale = 1e30, color = vector (0,1,0))
+   c1.accel =          #acceleration of charge 1
+   c2.accel =          #acceleration of charge 2
+   c1.vel =            #new velocity of charge 1
+   c2.vel =            #new velocity of charge 2
+   c1.pos =            #new position of charge 1
+   c2.pos =            #new position of charge 2
+   r12 =               #new distance between charge 1 and charge 2
+   t=t+dt #increment time variable </code>
 ====Answer Key===
 ===Handout===
+SEE CODE BELOW
+CHARGE MAGNITUDE NANOCOULOMBS
 ===Code===
-<code Python [enable_line_numbers="true", highlight_lines_extra=""]>
+<code Python [enable_line_numbers="true", highlight_lines_extra="36,37,43,44,46,47,49,50,52"]>
 GlowScript 2.7 VPython
@@ Line 72: / Line 132: @@
    c2.eforcec1 = -c1.eforcec2 #electrostatic force of charge 1 on charge 2
     #add electrostatic force arrow to charges
    attach_arrow (c1, "eforcec2", shaftwidth = .2, scale = 1e30, color = vector (1,0,0))