/Python/Http://techforcurious.website/simulation-of-pendulum-vpython-tutorial-visual-python/

Http://techforcurious.website/simulation-of-pendulum-vpython-tutorial-visual-python/

from visual import*
display(width=600,height=600,center=vector(0,12,0),background=color.white)
g=9.8 # acceleration due to gravity
bob=sphere(pos=vector(5,2,0),radius=0.5,color=color.blue)
pivot=vector(0,20,0)
roof=box(pos=pivot,size=vector(10,0.5,10),color=color.green)
rod=cylinder(pos=pivot,axis=bob.pos-pivot,radius=0.1,color=color.red)
t=0 # time 
dt=0.01 # time interval 
l=mag(bob.pos-pivot) # length of pendulum
cs=(pivot.y-bob.pos.y)/l # calculation of cos(theta) 
theta=acos(cs) # angle with vertical direction
vel=0.0 # angular velocity
while (t<100):
  rate(100) # maximum 100 calculations per second
  acc=-g/l*sin(theta) # updating of angular acceleration
  theta=theta+vel*dt # updating of angular position
  vel=vel+acc*dt # updating of angular velocity
  bob.pos=vector(l*sin(theta),pivot.y-l*cos(theta),0) # cal. position
  rod.axis=bob.pos-rod.pos # updating other end of rod of pendulum
  t=t+dt # updating time

Similar codes

0 vote121 views1 answer
Download image from url selenium python
Python
1 vote118 views1 answer
Find table with class beautifulsoup
Python
0 vote126 views1 answer
To_datetime with non zero padded values python
Python
-1 vote135 views1 answer
How to scan directory recursively python
Python
0 vote131 views1 answer
Python how to change a point in a multidimensional list
Python
8 votes126 views3 answers
How to add two lists to an array variable
Python
30 votes125 views3 answers
How to replace null values in pandas
Python
0 vote128 views1 answer
Python round 2.5
Python
0 vote85 views1 answer
Exercism phone number python
Python
58 votes89 views1 answer
Case in pyhton
Python