Expand the following:
\begin{align}
&\cssId{Step1}{{s=?}}\\[3px]
&\cssId{Step2}{→p_E= 12 b }\\[3px]
&\cssId{Step3}{→ Example Selectivitat → p_E= 12*b= 3,6 m }\\[3px]
\end{align}
In the first step we make the equation of the force breaking with mass and acceleration
In the seconde step we make the equation of normal force and the gravity force
In the third step we make the equation of accelation with Force breaking and mass