I need to solve the lines that have ######

from vpython import * #GlowScript 3.0 VPython

scene = canvas(background=color.white)

fixed_point = sphere ( pos=vec(0,6,0 ), radius=0.5, color=color.red )

l_0 = 8 theta_0 = 30*pi/180 omega_0 = 0 g = 10

ball = sphere(pos= fixed_point.pos+vec(l_0*sin(theta_0),-l_0*cos(theta_0),0), mass = 0.5 , radius=0.2, color=color.blue )#, make_trail=True )

spring = helix( pos= fixed_point.pos, axis = ball.pos -fixed_point.pos, radius =0.2, color=color.orange )

ball.omega = ############# ball.p = ####################

a_graph = graph(title=' Theta - Omega', xtitle=' t ', ytitle=' ' )

theta_plot = gcurve(graph= a_graph, color=color.red) omega_plot = gcurve(graph= a_graph, color=color.green)

#scene.waitfor('click')

myrate = 200

ball.theta = theta_0 t = 0 dt = 0.01

ball.omega_old = ball.omega ball.T = 0

while t < 20 : rate(myrate) spring.pos = fixed_point.pos spring.axis = ball.pos - fixed_point.pos

F = ####################### ball.p = ###################### ball.omega = ########################## ball.theta = ########################## ball.pos = fixed_point.pos +vec(l_0*sin(ball.theta),-l_0*cos(ball.theta),0) theta_plot.plot(pos=(t,ball.theta)) omega_plot.plot(pos=(t,ball.omega)) t = t + dt if ball.omega_old > 0 and ball.omega < 0 : print ( ball.T, 2*pi*sqrt(l_0/g)) ball.T = 0

ball.omega_old = ball.omega ball.T = ball.T + dt