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Un article trouvé pour ce sujet.
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A snail on an elastic band |
2010-02-03 |
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Joe pose la question :
A snail starts crawling from one end along a uniformly stretched elastic band. It crawls at a rate of 1 foot per minute. The band is initially 10 feet long and is instantaneously and uniformly stretched an additional 10 feet at the end of each minute. The snail maintains his grip on the band during the instant of each stretch. At what points in time is the snail
(a) closest to the far end of the band, and
(b) farthest from the far end of the band?
Robert Dawson lui répond. |
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