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Re: Poll: Reasonable and achievable, or shooting for the stars?
Quote:
Originally Posted by Kevin Sevcik
18 Ah @ 12V = 12*18 Watt-hours * 60 min/hr * 60 s/min = 777600 Watt-s or Joules. Escape velocity is 11186 m/s. So 777600 = 1/2 * m * (11186)^2 = 12.4g. Balls weigh 70g, so you'd need 6 batteries charging your ball launching system to reach escape velocity. Not counting drag, etc. A properly designed charging system could probably send a penny into solar orbit, though.
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That's the most interesting math I have seen all year.
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