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As I was standing on a weighing machine ...

As I was standing on a weighing machine inside a lift it recorded 50 kg-wt. Suddenly for few seconds it is recorded 42 kg-wt. What must have happened during that time? Explain with complete numerical analysis.

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As I was standing on a weighing machine inside a lift it recorded 50 kg wt. Suddenly for few seconds it recorded 45 kg wt. What must have happened during that time Explain with complete numerical analysis.

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