$d=\frac{m}{v\ }\ \ \ \ \ \ \ \ \ \ \ \ \ m=\frac{d}{v}\ \ \ \ \ \$

$v=\frac{d}{m}\ \ \ \ \$

$Er\cdot100=Er\ \%\ \ \ \ \ \ \$

....

$Vx\ =F\cdot\cos\alpha\ \$ $F=\frac{Vx}{\cos\alpha\ }\ \$

$\cos\alpha=\frac{Vx}{F}\ \ \$

$Vy=F\cdot\sin\alpha\ \ \ \ \ \ \ F=\frac{Vy}{\sin\alpha}\ \ \$

$\sin\alpha=\frac{Vy}{F}\ \ \$

$m\cdot g\ \ \left(9,81\right)\ \ \$

$g\cdot m\ \ \$

$F=k\cdot\Delta x\ \ \ \ \ \ \ k=\frac{F}{\Delta x}\ \ \ \$

$\Delta x=\frac{F}{k}\ \ \ \$

$\sum_x^yF=0\ \ \$

.....

$P\parallel=P\cdot\frac{h}{l}\ \ \ \ \ \ P=P\parallel\cdot\frac{l}{h}\ \ \ \ \ \ \$

$l=\frac{P\cdot h}{P\parallel}\ \ \ \ \ \ \ h=\frac{P\parallel}{P}\cdot l\ \ \$

$M=F\cdot B\ \ \ \ \ \ \ \ \ \ F=\frac{M}{B}\ \ \ \ \ \ \ \ \$

$B=\frac{M}{F}\ \ \ \ \ \ \ \$

$\sum_x^yM=0\ \ \$

........

$\frac{F1b1}{F1}\ =\ \frac{F2b2}{F1}\ \ \ \ \ \ \ \ \ \frac{F1b1}{b1}=\frac{F2b2}{b1}\ \ \$

$\frac{F2b2}{F2}=\frac{F1b1}{F2}\ \ \ \ \ \ \ \ \ \frac{F2b2}{b2}\ =\frac{F1b1}{b2\ }\ \ \ \ \ \$

$\ F1b1=F2b2\ \ \ \ \$