Drehendes Rad I
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:
Zeit \(t\) / Winkelgeschwindigkeit / Kreisfrequenz \(\omega\) / Winkelbeschleunigung \(\alpha\) / Winkel \(\theta\) /
The following formulas must be used to solve the exercise:
\(\gamma = \dfrac{\alpha}{2}t^2+\omega_0 t + \gamma_0 \quad \)
No explanation / solution video to this exercise has yet been created.
Visit our YouTube-Channel to see solutions to other exercises.
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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:
Ein Rad drehe sich anfänglich mit .radianpersecond. abcliste abc Wie schnell dreht sich das Rad neu wenn es währ .min mit .radianpersecondsquared beschleunigt wird? abc Wie lange würde es bei einer Bremsbeschleunigung von -.radianpersecondsquared dauern bis das Rad auf noch genau eine halbe Umdrehung pro Sekunde abgebremst wurde? %abc Wie stark müsste man das Rad beschleunigen um es innerhalb von .s auf taus Umdrehungen pro Minute zu bringen? abc Um welchen Winkel dreht sich das Rad wenn es nun währ .s mit .radianpersecondsquared beschleunigt wird? %abc Wie stark müsste man das Rad .s lang beschleunigen damit es sich währ dieser Zeit um ang drehen würde? abc Wie lange würde es dauern bis sich das Rad bei einer nun einsetzen Beschleunigung von .radianpersecondsquared um rad gedreht hat? abcliste
Solution:
abcliste abc omega omega_ + alpha t .radianpersecond + .radianpersecondsquared s .eradianpersecond .erps abc t fracomega-omega_alpha frac.radianpersecond-.radianpersecond-.radianpersecondsquared .s abc gamma fracalphat^+omega_ t frac.radianpersecondsquared .s^+ .radianpersecond .s .erad abc t frac-omega_ pm sqrtomega_^ +alphagammaalpha frac-.radianpersecond pm sqrtqty.radianpersecond^ + .radianpersecondsquaredrad.radianpersecondsquared t_ .es s t_ -.es -.s abcliste
Ein Rad drehe sich anfänglich mit .radianpersecond. abcliste abc Wie schnell dreht sich das Rad neu wenn es währ .min mit .radianpersecondsquared beschleunigt wird? abc Wie lange würde es bei einer Bremsbeschleunigung von -.radianpersecondsquared dauern bis das Rad auf noch genau eine halbe Umdrehung pro Sekunde abgebremst wurde? %abc Wie stark müsste man das Rad beschleunigen um es innerhalb von .s auf taus Umdrehungen pro Minute zu bringen? abc Um welchen Winkel dreht sich das Rad wenn es nun währ .s mit .radianpersecondsquared beschleunigt wird? %abc Wie stark müsste man das Rad .s lang beschleunigen damit es sich währ dieser Zeit um ang drehen würde? abc Wie lange würde es dauern bis sich das Rad bei einer nun einsetzen Beschleunigung von .radianpersecondsquared um rad gedreht hat? abcliste
Solution:
abcliste abc omega omega_ + alpha t .radianpersecond + .radianpersecondsquared s .eradianpersecond .erps abc t fracomega-omega_alpha frac.radianpersecond-.radianpersecond-.radianpersecondsquared .s abc gamma fracalphat^+omega_ t frac.radianpersecondsquared .s^+ .radianpersecond .s .erad abc t frac-omega_ pm sqrtomega_^ +alphagammaalpha frac-.radianpersecond pm sqrtqty.radianpersecond^ + .radianpersecondsquaredrad.radianpersecondsquared t_ .es s t_ -.es -.s abcliste
Meta Information
Exercise:
Ein Rad drehe sich anfänglich mit .radianpersecond. abcliste abc Wie schnell dreht sich das Rad neu wenn es währ .min mit .radianpersecondsquared beschleunigt wird? abc Wie lange würde es bei einer Bremsbeschleunigung von -.radianpersecondsquared dauern bis das Rad auf noch genau eine halbe Umdrehung pro Sekunde abgebremst wurde? %abc Wie stark müsste man das Rad beschleunigen um es innerhalb von .s auf taus Umdrehungen pro Minute zu bringen? abc Um welchen Winkel dreht sich das Rad wenn es nun währ .s mit .radianpersecondsquared beschleunigt wird? %abc Wie stark müsste man das Rad .s lang beschleunigen damit es sich währ dieser Zeit um ang drehen würde? abc Wie lange würde es dauern bis sich das Rad bei einer nun einsetzen Beschleunigung von .radianpersecondsquared um rad gedreht hat? abcliste
Solution:
abcliste abc omega omega_ + alpha t .radianpersecond + .radianpersecondsquared s .eradianpersecond .erps abc t fracomega-omega_alpha frac.radianpersecond-.radianpersecond-.radianpersecondsquared .s abc gamma fracalphat^+omega_ t frac.radianpersecondsquared .s^+ .radianpersecond .s .erad abc t frac-omega_ pm sqrtomega_^ +alphagammaalpha frac-.radianpersecond pm sqrtqty.radianpersecond^ + .radianpersecondsquaredrad.radianpersecondsquared t_ .es s t_ -.es -.s abcliste
Ein Rad drehe sich anfänglich mit .radianpersecond. abcliste abc Wie schnell dreht sich das Rad neu wenn es währ .min mit .radianpersecondsquared beschleunigt wird? abc Wie lange würde es bei einer Bremsbeschleunigung von -.radianpersecondsquared dauern bis das Rad auf noch genau eine halbe Umdrehung pro Sekunde abgebremst wurde? %abc Wie stark müsste man das Rad beschleunigen um es innerhalb von .s auf taus Umdrehungen pro Minute zu bringen? abc Um welchen Winkel dreht sich das Rad wenn es nun währ .s mit .radianpersecondsquared beschleunigt wird? %abc Wie stark müsste man das Rad .s lang beschleunigen damit es sich währ dieser Zeit um ang drehen würde? abc Wie lange würde es dauern bis sich das Rad bei einer nun einsetzen Beschleunigung von .radianpersecondsquared um rad gedreht hat? abcliste
Solution:
abcliste abc omega omega_ + alpha t .radianpersecond + .radianpersecondsquared s .eradianpersecond .erps abc t fracomega-omega_alpha frac.radianpersecond-.radianpersecond-.radianpersecondsquared .s abc gamma fracalphat^+omega_ t frac.radianpersecondsquared .s^+ .radianpersecond .s .erad abc t frac-omega_ pm sqrtomega_^ +alphagammaalpha frac-.radianpersecond pm sqrtqty.radianpersecond^ + .radianpersecondsquaredrad.radianpersecondsquared t_ .es s t_ -.es -.s abcliste
Contained in these collections:
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Kinematik am Kreis by pw
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Kinematik Kreis 1. Formel by TeXercises