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The Not-so-simple Pendulum 2
Age 16 to 18
Challenge Level 
Intuitively, how does friction affect motion? Does the $v$ term
accomplish this to some level?
How does the equation relate to $F=ma$?
As a rough sketch without any calculation, what would you expect the trajectory over time of the exact, real pendulum motion be over time? Compare this to a plot of the solution. What would be realistic values of the parameters? Make some well-reasoned estimations if you have no intuitive sense for the scale of the parameters.
How does the equation relate to $F=ma$?
As a rough sketch without any calculation, what would you expect the trajectory over time of the exact, real pendulum motion be over time? Compare this to a plot of the solution. What would be realistic values of the parameters? Make some well-reasoned estimations if you have no intuitive sense for the scale of the parameters.
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