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Announcement#1 2006-03-01 01:38:50Ping-pong ball in tubeTry this one. The correct solution is interesting.
Chemists are physicists who don't do math.  Offline #2 2006-03-12 05:44:00
Re: Ping-pong ball in tubeHmm... tricky one... I am absolutley certain that macgyver would know how. I would just jam the ruler down into the pipe and pop it out..... this is also dependent on how far down the pipe goes out of the cube and what is on the outside of the cube. What if I am in space and that ping pong ball is the only thing keeping the air inside the cube from being evacuated? just an Idea..... Ever wonder what Soylent Green tasted like? Nerd's pickup line: You can be sine of theta squared and I'll be cosine of theta squared. Let's get together and become one. Offline #4 2006-03-15 06:29:52
Re: Ping-pong ball in tubeBlow over the top of the pipe. The air flowing over the top of the pipe will reduce the pressure there (called the Bernoulli effect), causing a pressure imbalance that will cause the ball to rise. I'm not sure just how hard (or how long) you'd have to blow to get enough of a pressure differential to get the ball to fly all the way out of the tube; it may be more than is reasonable to expect a person to blow. My first thought on all this was to perhaps use the match to burn something (maybe the string?) over the top of the pipe, using heat to achieve a similar effect. Again, I'm not sure how the magnitudes of the force required would compare. Offline #5 2006-04-21 19:07:25
Re: Ping-pong ball in tubeFill the tube with urine and the ball will float right out... #6 2006-04-22 03:41:42Re: Ping-pong ball in tubeVery good Carol. Chemists are physicists who don't do math. Offline |