Still Waters Posted January 14, 2015 #1 Share Posted January 14, 2015 It is a head-scratching riddle which has troubled scientists and amateurs alike for generations: would a lorry carrying birds weigh less if they were all flying? It may be natural to assume that because the birds are suspended in mid-air their weight no longer has any impact on the lorry. http://www.telegraph...University.html 1 Link to comment Share on other sites More sharing options...
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