Exercise:
Ist es besser von der kippen Leiter zu springen oder mit ihr zu fallen?

Solution:
tikzpicture filldrawcolorgreen!!white fillgreen!!white . rectangle -.; draw -stealth colorblue ultra thick -- nodeanchorwestsscva-; draw -stealth red .. -- nodeanchornorth west yshift.cmg..; drawstealth-stealth colororange thick -- nodeanchorleftell ; foreach x in ... draw ..*x -- . .*x; drawthick . -- .; drawthick . -- .; scopescale. line width.cm line capround line joinround rounded cornersmm xshiftcm yshift.cm draw nodeanchorwest xshift.cmM coordinate A -- ++- coordinate B; draw B -- ++.-. -- ++-.-; draw B -- ++-.-. -- ++.-;%left draw A -- ++-. -- ++-.; %left draw A -- ++.. -- ++..; %right fill A ++ circle .; scope tikzpicture bf Springen: Ekin Epot frac Mv_a^ Mgell v_a sqrtgell columnbreak tikzpicture filldrawcolorgreen!!white fillgreen!!white . rectangle -.; draw -stealth colorblue ultra thick -- nodeanchorwestsscvb -; drawstealth-stealth colororange thick -- nodeanchorleftell ; draw-stealth . to b left ; draw ultra thick -- nodeanchoreast colorredm ; draw ultra thick -- ; filldraw colorred! circle .mm; filldraw colordarkgreen fillyellow nodeanchornorthDrehachse circle .mm; scopescale. line width.cm line capround line joinround rounded corners.mm xshiftcm yshift.cm draw nodeanchoreast yshift-.cmM coordinate A -- ++- coordinate B; draw B -- ++.-. -- ++.-; draw B -- ++-.-. -- ++-; draw A -- ++.-. -- ++.-.; %right draw A -- ++.. -- ++.-.; %left fill A ++. circle .; scope scoperotat scale. line width.cm line capround line joinround rounded corners.mm xshift.cm yshift.cm draw nodeanchoreast yshift-.cmM coordinate A -- ++- coordinate B; draw B -- ++.-. -- ++-.-.; draw B -- ++.-. -- ++.-.; draw A -- ++.-. -- ++.; %right draw A -- ++.. -- ++.-.; %left fill A ++. circle .; scope tikzpicture bf Bleiben: Erot Epot frac Jomega^ Mgell + frac mgell frac left Mell^+ fracmell^+ mleftfracellright^ rightomega^ Mgell + frac mgell v_b^ gell fracM+fracmM+fracm v_b sqrtgell delta v_a