Billardtisch
About points...
We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
About difficulty...
We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
Question
Solution
Short
Video
\(\LaTeX\)
Need help? Yes, please!
The following quantities appear in the problem:
Winkel \(\theta\) /
The following formulas must be used to solve the exercise:
\(\cos\alpha = \dfrac{b}{c} \quad \) \(\sin\alpha = \dfrac{a}{c} \quad \) \(\tan\alpha = \dfrac{a}{b} \quad \)
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Visit our YouTube-Channel to see solutions to other exercises.
Don't forget to subscribe to our channel, like the videos and leave comments!
Exercise:
Auf dem Billardtisch liegen zwei Kugeln Durchmesser je dO Masse je g der weisse Spielball bei wxOwyO der blaue Objektball bei bxObyO. In welchem Winkel muss der weisse Spielball angespielt werden damit der blaue Objektball unten links im Koordinatenursprung gelocht werden kann? center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; %Bemassung %draw- -.---.. nodemidway above rotatemm; %draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Solution:
Als erstes berechnet man unter welchem Winkel der blaue Ball gelocht werden muss: alpha arctanfracy_bx_b arctanfracbybx alpQ Aus diesem Winkel erhält man die Position x_gy_g auf welche der weisse Objektball gespielt werden muss also da wo der glqq Ghostballgrqq liegt: x_g x_b + dcosalpha gxQ y_g y_b + dsinalpha gyQ Wenn der weisse Ball aus seiner aktuellen Position auf diese gespielt werden soll so muss er unter einem Winkel von beta arctanfracy_w-y_gx_w-x_g arctanfracwy-gywx-gx betQ angespielt werden. center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; draw gxXgyX circle rX; drawred dashed --gxXgyX; drawred dashed gxXgyX--wxXwyX; %Bemassung draw- -.---.. nodemidway above rotatemm; draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Auf dem Billardtisch liegen zwei Kugeln Durchmesser je dO Masse je g der weisse Spielball bei wxOwyO der blaue Objektball bei bxObyO. In welchem Winkel muss der weisse Spielball angespielt werden damit der blaue Objektball unten links im Koordinatenursprung gelocht werden kann? center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; %Bemassung %draw- -.---.. nodemidway above rotatemm; %draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Solution:
Als erstes berechnet man unter welchem Winkel der blaue Ball gelocht werden muss: alpha arctanfracy_bx_b arctanfracbybx alpQ Aus diesem Winkel erhält man die Position x_gy_g auf welche der weisse Objektball gespielt werden muss also da wo der glqq Ghostballgrqq liegt: x_g x_b + dcosalpha gxQ y_g y_b + dsinalpha gyQ Wenn der weisse Ball aus seiner aktuellen Position auf diese gespielt werden soll so muss er unter einem Winkel von beta arctanfracy_w-y_gx_w-x_g arctanfracwy-gywx-gx betQ angespielt werden. center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; draw gxXgyX circle rX; drawred dashed --gxXgyX; drawred dashed gxXgyX--wxXwyX; %Bemassung draw- -.---.. nodemidway above rotatemm; draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Meta Information
Exercise:
Auf dem Billardtisch liegen zwei Kugeln Durchmesser je dO Masse je g der weisse Spielball bei wxOwyO der blaue Objektball bei bxObyO. In welchem Winkel muss der weisse Spielball angespielt werden damit der blaue Objektball unten links im Koordinatenursprung gelocht werden kann? center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; %Bemassung %draw- -.---.. nodemidway above rotatemm; %draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Solution:
Als erstes berechnet man unter welchem Winkel der blaue Ball gelocht werden muss: alpha arctanfracy_bx_b arctanfracbybx alpQ Aus diesem Winkel erhält man die Position x_gy_g auf welche der weisse Objektball gespielt werden muss also da wo der glqq Ghostballgrqq liegt: x_g x_b + dcosalpha gxQ y_g y_b + dsinalpha gyQ Wenn der weisse Ball aus seiner aktuellen Position auf diese gespielt werden soll so muss er unter einem Winkel von beta arctanfracy_w-y_gx_w-x_g arctanfracwy-gywx-gx betQ angespielt werden. center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; draw gxXgyX circle rX; drawred dashed --gxXgyX; drawred dashed gxXgyX--wxXwyX; %Bemassung draw- -.---.. nodemidway above rotatemm; draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Auf dem Billardtisch liegen zwei Kugeln Durchmesser je dO Masse je g der weisse Spielball bei wxOwyO der blaue Objektball bei bxObyO. In welchem Winkel muss der weisse Spielball angespielt werden damit der blaue Objektball unten links im Koordinatenursprung gelocht werden kann? center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; %Bemassung %draw- -.---.. nodemidway above rotatemm; %draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
Solution:
Als erstes berechnet man unter welchem Winkel der blaue Ball gelocht werden muss: alpha arctanfracy_bx_b arctanfracbybx alpQ Aus diesem Winkel erhält man die Position x_gy_g auf welche der weisse Objektball gespielt werden muss also da wo der glqq Ghostballgrqq liegt: x_g x_b + dcosalpha gxQ y_g y_b + dsinalpha gyQ Wenn der weisse Ball aus seiner aktuellen Position auf diese gespielt werden soll so muss er unter einem Winkel von beta arctanfracy_w-y_gx_w-x_g arctanfracwy-gywx-gx betQ angespielt werden. center tikzpicturescale latex %Billardtisch mm mm filldrawcolorblack -.-. rectangle ..; filldrawcolorgreen!!black .-.--.-. arc::.--.-.--.-. arc -::.--..--.. arc -::.--..--.. arc::.--..--.. arc::.---..---.. arc ::.; filldrawcolorgreen!!blackfillgreen!!white rectangle ..; % Middle Holes %upper filldrawcolorgreen!!whitefillgreen!!white .. rectangle ..; filldrawcolorgreen!!whitefillblack!!white .. circle .; %lower filldrawcolorgreen!!whitefillgreen!!white . rectangle .-.; filldrawcolorgreen!!whitefillblack!!white .-. circle .; % Corner Hole sw filldrawcolorgreen!!whitefillblack!!white .-- -.. arc ::.--.-.--.; filldrawcolorgreen!!whitefillgreen!!white .---.. arc:-:.--.-.--.; % Corner Hole se filldrawcolorgreen!!whitefillblack!!white .-- .-. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white .--.-. arc::.--..--..; % Corner Hole ne filldrawcolorgreen!!whitefillblack!!white ..--.. arc -::.--..--..; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc ::.--..--..; % Corner Hole nw filldrawcolorgreen!!whitefillblack!!white ..--.. arc::.---..--.; filldrawcolorgreen!!whitefillgreen!!white ..--.. arc:-:.---..--.; %Diamonds vertical filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite -. . circle .; filldrawcolorwhite . . circle .; %Diamonds horizontal low filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; filldrawcolorwhite . -. circle .; %Diamonds horizontal high filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; filldrawcolorwhite . . circle .; nodecolorwhite at . -. small TeX sfercises.com; %Billardkugeln . mm shadeball colorwhite wxXwyX circle rX; shadeball colorblue bxXbyX circle rX; draw gxXgyX circle rX; drawred dashed --gxXgyX; drawred dashed gxXgyX--wxXwyX; %Bemassung draw- -.---.. nodemidway above rotatemm; draw- -.--.-. nodemidway below mm; %Koordinatenkreuz draw- thick colorred --.; draw- thick colorred --.; nodecolorred at .. x; nodecolorred at .. y; tikzpicture center
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