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Sasha lifts a couch 8.2 meters from the ground floor of her house to the attic. If the couch has a mass of 120 kg, what is the gravitational potential energy gained by the couch? Estimate g as 9.81 m/s2

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ERISSS17IN

Answer:

PE= m×g×h

PE= 120 kg × 9.81 m/s2 × 8.2 m

PE= 9653.04 kg m²/s²

PE= 9653.04 J

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