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Weighing Bells

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#1 TimeSpaceLightForce


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Posted 23 March 2014 - 06:38 PM

On each pan of the tri-beam scale are 3 seemingly identical bells that are balanced with the other pan bells.


A) Sort out the bells-3 light bells (L=1) and 3 heavy bells (H=3) from Normal bells (N=2) by using the scale .
    How many times will it take to identify their weights?

B) When you got a desired outcome on the first weighing ,how can  all the bells  be sorted on the 2nd weighing?
    The scale works as follows:
    1)Balanced : 3 weights on pans are equal                 ex. 6 : 6 : 6
    2)One pan down : Only the heaviest                         ex. (5):3 :2  , (5):1:1
    3)One pan up : 2 heavier weights are equal               ex. (3):4 :4

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