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A certain body is weighed at an elevation of 10,000 m (where g = 9.778 m/s2) by a spring balance that was calibrated at sea

A certain body is “weighed” at an elevation of 10,000 m (where g = 9.778 m/s2) by a spring balance that was calibrated at sea level. The reading on spring balance is 10 kg. What is the mass of this body?

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