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Central Force MotionIntroductionOne may derive the equation governing all central force motion problems beginning with the total mechanical energy. i.e.,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,where 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 is the reduced mass of the system, and 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 is the potential. Solving this equation for the radial velocity, 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 and using conservation of angular momentum, 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 = const., one may then readily derive the following equation: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.The most useful application of this equation is realized by noting that if the nature of the orbit is known (i.e., the mathematical form foir 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 ), then the mathematical form for the force may be derived. The following procedure may be used to determine the force required to execute an orbit. The necesary 'form' is a function in polar coordinates. Examples of well-known orbits are also shown.one may derive the equation governing all central force motion problems beginning with the total mechanical energy. i.e.,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,where 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 is the reduced mass of the system, and 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 is the potential. Solving this equation for the radial velocity, 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 and using conservation of angular momentum, 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 = const., one may then readily derive the following equation: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.ApplicationOne of the most usefule application sof this equation is realized by noting that, if the nature of the orbit is known (i.e., the mathematical form foir 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 ), then the mathematical form for the force may be derived.The following procedure may be used to determine the force required to execute an orbit. The necesary 'form' is a function in polar coordinates. Examples of well-known orbits are also shown.findForce CodefindForce:=proc(form::algebraic)
global r,F;
r:=unapply(form,theta):
diff(1/r(theta),theta$2)+1/r(theta) = -mu/(L^2)*r(theta)^2*f:
# solve for the force as a function of the angle
solve(%,f):
# solve the orbit for theta
solve(r=r(theta),theta):
# substitute the angular form into the force solution
subs(theta=%,%%):
# simplify the force and "build" the force function
F:=unapply(collect(simplify(%),r),r):
print('r(theta)'=r(theta));
print('F(r)'=F(r));
end:Elliptic MotionfindForce(alpha/(1+epsilon*cos(theta)));alpha:=1: L:=1: mu:=1: epsilon:=0.9:
plot(r(theta),theta=0..2*Pi,
coords=polar,scaling=constrained);Linear MotionfindForce(b/(sin(theta)-m*cos(theta)));b:=1: m:=1:
plot(r(theta),theta=0..2*Pi,
coords=polar,scaling=constrained);Cardiod MotionfindForce(B*cos(n*theta));B:=1: n:=7:
plot(r(theta),theta=0..2*Pi,
coords=polar,scaling=constrained);Extension - Animating 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with(plots):
orbit:=proc(ecc)
# declare all variables as local
local r,T,N,S,j,i,a,P,L,F,eStr,tStr;
global oframes;
with(plots): with(plottools):
if (ecc >= 1.0) then
ERROR("ecc must obey 0 <= ecc <1");
fi:
# define and plot the trajectory
r:=(ecc,theta)->1/(1+ecc*cos(theta)):
T:=plot(r(ecc,theta),theta=0..2*Pi,coords=polar,color=blue):
N:=360: S:=5: j:=1:
for i from 1 to N by S do
a[i]:=Pi/180*i: #define an angle
# plot a point on the orbit
P[i]:=pointplot([r(ecc,a[i]),a[i]],
coords=polar,color=red,symbol=circle):
# plot a line from the origin to the point
L[i]:=plot([ [0,0],[r(ecc,a[i]),a[i]] ],
coords=polar,color=green):
# store a picture of the system
F[j]:=display(T,P[i],L[i],scaling=constrained):
j:=j+1:
od:
# store all of the pictures as a sequence
oframes:=seq(F[j],j=1..N/S):
# construct the title string
eStr:=convert(ecc,string):
tStr:=cat("Orbital Trajectory, ecc=",eStr):
# create the animation
display(oframes,insequence=true,axes=none,
title=tStr,scaling=constrained);
end: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