$${\mathtt{y1}} = {\frac{{\mathtt{\,-\,}}{\mathtt{m}}}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{k}}\right)}}{\mathtt{\,\times\,}}{In}{\left({\frac{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}{\mathtt{\,-\,}}{{\mathtt{kv}}}^{{\mathtt{2}}}\right)}{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}\right)}}\right)}$$
Use this algorithm to calculate how many Newtons of force a rocket gives off.
m = mass of rocket
g = 9.81 m/s²
v = velocity of rocket
y = height rocket reaches
k = wind resistance forces
T = motor thrust in Newtons (AKA what we're solving for.)
$${\mathtt{y1}} = {\frac{{\mathtt{\,-\,}}{\mathtt{m}}}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{k}}\right)}}{\mathtt{\,\times\,}}{In}{\left({\frac{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}{\mathtt{\,-\,}}{{\mathtt{kv}}}^{{\mathtt{2}}}\right)}{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}\right)}}\right)}$$
Use this algorithm to calculate how many Newtons of force a rocket gives off.
m = mass of rocket
g = 9.81 m/s²
v = velocity of rocket
y = height rocket reaches
k = wind resistance forces
T = motor thrust in Newtons (AKA what we're solving for.)
$$\small{\text{$T=?$}}$$
$$\small{\text{$
\begin{array}{rcl}
y_1 &=& -\dfrac{m}{2k}\cdot \ln{ \left( \dfrac{T-(mg+kv^2) }{T-mg} \right) }\\\\
-2y_1\frac{k}{m} &=& \ln{ \left( \dfrac{T-(mg+kv^2) }{T-mg} \right) } \qquad | \qquad e^x \\\\
e^{-2y_1\frac{k}{m}} &=& \dfrac{T-(mg+kv^2) }{T-mg} \\\\
\dfrac{1}{e^{2y_1\frac{k}{m}}} &=& \dfrac{T-(mg+kv^2) }{T-mg} \\\\
e^{2y_1\frac{k}{m}} &=& \dfrac{T-mg}{T-(mg+kv^2) } \\\\
\left[ T-(mg+kv^2) \right] ( e^{2y_1\frac{k}{m}} ) &=& T-mg \\\\
T\cdot ( e^{2y_1\frac{k}{m}} )- (mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) &=& T-mg \\\\
T\cdot ( e^{2y_1\frac{k}{m}} - 1 ) &=& (mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) -mg \\\\
\mathbf{T} & \mathbf{=} & \mathbf{\dfrac{(mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) -mg } {( e^{2y_1\frac{k}{m}} - 1 )}} \\\\
\end{array}
$}}$$
$${\mathtt{y1}} = {\frac{{\mathtt{\,-\,}}{\mathtt{m}}}{\left({\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{k}}\right)}}{\mathtt{\,\times\,}}{In}{\left({\frac{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}{\mathtt{\,-\,}}{{\mathtt{kv}}}^{{\mathtt{2}}}\right)}{\left({\mathtt{T}}{\mathtt{\,-\,}}{\mathtt{mg}}\right)}}\right)}$$
Use this algorithm to calculate how many Newtons of force a rocket gives off.
m = mass of rocket
g = 9.81 m/s²
v = velocity of rocket
y = height rocket reaches
k = wind resistance forces
T = motor thrust in Newtons (AKA what we're solving for.)
$$\small{\text{$T=?$}}$$
$$\small{\text{$
\begin{array}{rcl}
y_1 &=& -\dfrac{m}{2k}\cdot \ln{ \left( \dfrac{T-(mg+kv^2) }{T-mg} \right) }\\\\
-2y_1\frac{k}{m} &=& \ln{ \left( \dfrac{T-(mg+kv^2) }{T-mg} \right) } \qquad | \qquad e^x \\\\
e^{-2y_1\frac{k}{m}} &=& \dfrac{T-(mg+kv^2) }{T-mg} \\\\
\dfrac{1}{e^{2y_1\frac{k}{m}}} &=& \dfrac{T-(mg+kv^2) }{T-mg} \\\\
e^{2y_1\frac{k}{m}} &=& \dfrac{T-mg}{T-(mg+kv^2) } \\\\
\left[ T-(mg+kv^2) \right] ( e^{2y_1\frac{k}{m}} ) &=& T-mg \\\\
T\cdot ( e^{2y_1\frac{k}{m}} )- (mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) &=& T-mg \\\\
T\cdot ( e^{2y_1\frac{k}{m}} - 1 ) &=& (mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) -mg \\\\
\mathbf{T} & \mathbf{=} & \mathbf{\dfrac{(mg+kv^2)\cdot ( e^{2y_1\frac{k}{m}} ) -mg } {( e^{2y_1\frac{k}{m}} - 1 )}} \\\\
\end{array}
$}}$$