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A body of mass 80kg stands on a weighing machine in a lift. Determine the reading on the weighing machine when the lift moves;(a)downwards at constant velocity of 2.0m/s (b)downwards with an acceleration of 3m/s (c)upward with acceleration of 3m/s
4 years ago

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Anonymous
mg
m(g-3)
m (g+3)
4 years ago

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