The question is a Nonlinear Differential Equation with Initial Conditions given. This can be solved using the Symbolic Toolbox of MATLAB:
1. First, the code for solving x(t) is given below. Also, we convert all the variables into S.I units.
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MATLAB code for solving for the variable x(t):
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M=5;
alpha=0.5;
G=-9.8;
v0=40;
theta=35;
syms x(t)
D=diff(x);
ode = (M*diff(x,t,2)+alpha*(diff(x,t))^2) == 0;
cond1 = x(0) == 0;
cond2 = D(0) == v0*cosd(theta);
cond=[cond1 cond2];
X(t) = dsolve(ode,cond);
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The output comes out to be:
X=10*log((1152854012943651*t)/35184372088832 + 10) - 10*log(10)
which becomes
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MATLAB code for solving for the variable y(t):
===============================================================================================
M=5;
alpha=0.5;
G=-9.8;
v0=40;
theta=35;
syms y(t)
D=diff(y);
ode = (M*diff(y,t,2)+alpha*(diff(y,t))^2) == G*M;
cond1 = y(0) == 0;
cond2 = D(0) == v0*sind(theta);
cond=[cond1 cond2];
Y(t) = dsolve(ode,cond);
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In the output MATLAB displays a warning that the explicit solution could not be found
Y= [emp sym]
This may be because of the wrong questionf for the case of y.
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MATLAB CODE: Consider the second order system x(0)-o y (o)-o G -9.8m/s let M 5g θ...
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