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A dynamometer D (a force meter) is attached to two masses M = 10 kg and m = 1kg. forces F = 2kgf and f = 1kgf are applied to the masses. Find out in which of the cases gives maximum reading. A) F is applied to M and f to m B) F is applied to m and F to M C) If M = m = 5kg (ignore m, M values in the problem) D) If M is doubled to m. (Ignore m, M values in the problem) 1) A 2) B 3) C 4) D |
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Answer» Correct option is 2) B In center of mass frame, equal and opposite force acts m both blocks. In center of mass frame, if the force on the block is F, then maximum expansion = 2f / k |
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