Motion described with differential equation

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SUMMARY

The discussion focuses on deriving the acceleration due to gravity using differential equations. Specifically, the equation dv/dt = -mg - kv is analyzed, where 'm' represents mass, 'g' is the acceleration due to gravity, and 'k' is a constant related to drag. The integration of the equation leads to a relationship that allows for the calculation of 'g' by considering the time taken for an object to fall and the effects of drag. The participants emphasize the importance of understanding the integration process to solve for 'g' accurately.

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  • Understanding of differential equations
  • Familiarity with the concepts of acceleration and gravity
  • Knowledge of integration techniques
  • Basic physics principles related to motion
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  • Study the integration of differential equations in physics
  • Learn about the effects of drag on falling objects
  • Explore the derivation of motion equations under gravity
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1. http://i.imgur.com/3xya7IM.jpg




3. I curently do not understand how to jump to finding an acceleration due to gravity (in those terms asked) from the differential equations
 
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From the up eq, you can find its time (depending on g)... and for the down, you can do the same...
then you can solve for g since you know their summation...
 
From [itex]dv/dt= -mg- kv[/itex] you can get
[tex]\frac{dv}{mg+ kv}= -dt[/tex]
Integrate both sides.
 

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