Gravity Container & Physics

My 9 year old daughter Charlie wanted to create her first print and join the Physics Education Design Contest.  The result is this funky container that we used to learn about gravity, velocity and angular velocity.  While we kept to basic physics concepts since she is only in elementry school, there are many experiments/problems that you could run/solve and learn with this gravity fed container.  Below are some experiments/problems that I think would be appropriate for middle school through college for some.

When you are done experimenting, enjoy the container.  

Experiments / Problems

• Print the container!
• Determine average velocity of the container top
  • v_avg = (Δx) / (Δt)
  • x_0 = 0 mm
  • x_f = 150 mm
  • t_0 = 0 sec
  • t_f = ? (experiment to find the t_f & use it to calculate v_avg)
• Determine the average angular velocity of the container top
  • ω_avg = (Δθ) / (Δt)
  • θ_0 = 0 degrees
  • θ_f = 360 degrees
  • t_0 = 0 sec
  • t_f = ? (experiment to find the t_f & use it to calculate ω_avg)
• Determine the force of friction between the container top/bottom
  • Understand mass, normal force, coeficient of friction and start using some algabra!
• Determine the average CFM and v_max of the air exiting the container while it is closed
  • Dip your toes into some fluid dynamics and complex geometry
• Leave a comment on an experiment/problem that you would like to solve with this print!

Charlie's Contribution

• Charlie sketched out the profile shown in the bold black line on a sheet of paper, which I transcribed into Fusion, replicated 6x times around and ultimately resulted in the profile of the container you see here
• She also picked the colors, but I have to give some credit to @Goobsawce, who printed another one of my containers in similar colors

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