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Sunday, 11 June 2017
quote [ This is a Fb livestream filmed by a friend at the demonstration in its entirety. It begins with me being interviewed by a local reporter and that video will be linked once the story airs. ]
26ft torsional pendulum
50lb machine 50lb counterweight powered by two Harbor Freight angle grinders speed-controlled with dimmer switches. Harbor Freight "waterfall pump" for circulation. Wheels made from cheap aluminum cook pots. Valves made from swamp-cooler float valves. Anyone with a lathe should be able to build a version capable of flight. Enjoy.
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donnie said @ 11:48pm GMT on 12th June
In fact, I'll give you a clue and invite you to measure and plot the angular velocity of your balance beam as a function of time once the thing gets going. Is the acceleration constant? Or does the velocity oscillate? I observe the latter - can you explain why?
donnie said @ 11:49pm GMT on 12th June
In fact, I'll give you a clue and invite you to measure and plot the angular velocity of your balance beam as a function of time once the thing gets going. Is the acceleration constant (ie: does the angular velocity increase smoothly)? Or does the angular velocity oscillate? I observe the latter - can you explain why?
<-- Entry / Current Comment
donnie said @ 11:48pm GMT on 12th June
In fact, I'll give you a clue and invite you to measure and plot the angular velocity of your balance beam as a function of time once the thing gets going. Is the acceleration constant (ie: does the angular velocity increase smoothly)? Or does the angular velocity oscillate? I observe the latter - can you explain why?
It travels approximately 45ft in seven minutes.