a man of mass 60 kg records his weight on a weighing machine placed inside a lift. the ratio of the weights recorded when the lift is ascending up with uniform speed of 2 ms to when it is descending down with a uniform speed of m s will be
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A force acting on a body when it is acclerating . whether the lift moves with 2ms ,no force acts on man as long as the speed is constant. Thus in this case the measured weight is equal to 60 kg's
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