Calculating Motion of a Test Balloon on a Methane Planet

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The discussion revolves around calculating the motion of a test balloon and a box in a methane planet's atmosphere and liquid. The planet has a gaseous atmosphere density of 0.1 g/cm³ and a liquid methane density of 0.4 g/cm³, with the balloon and box setup weighing a total of 19 kg. Participants clarify the gravitational force on the planet, which is calculated to be approximately 0.425 m/s², and discuss the buoyant forces acting on both the balloon and the box. Archimedes' principle is referenced to determine the buoyant force, leading to calculations of net forces and acceleration. Ultimately, the time for the box to reach the surface is estimated to be around 3.33 seconds, and participants are encouraged to graph the motion accordingly.
  • #61
robax25 said:
y=0.5 at² = 0.5* 1.8m/s²*t²
t²= 10m/(0.5*1.8m/s²)=11.11s²
t=3.33s.
Looks right
 
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  • #62
the graph would be like that but I need to change the value.
 

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  • #63
Yes.
robax25 said:
the graph would be like that but I need to change the value.
 

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