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[Post New] 2 Dec 2010 15:31:03 IST
   Subject: An ant is at a corner of a cubical room of side a. The ant can move with a constant speed u. The
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vijay kharya (514)

Olaaa!! Perrrfect answer. 86  [128 rates]
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wromg , answer should be sqrt 5 a/u , use calculus and assume @1 and @2 as inclinations with the edge of the path on 2 seperate faces and then take derivative, take 2 equations , firs that the path is given by a / cos @1 + a / cos @2 = P and tan @1 + tan @2 = 1 now solve it to get minimum at @1 = @2 = pi / 4 so reqd. path is sqrt(5)*a and minimum time
  this reply:   5 points  (with 1  Olaaa!! Perrrfect answer.   in 1   votes   )     [?]
 
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