1. Calculate the gravitational potentialenergy of a 7.0-kg mass on the surface o

Question

1. Calculate the gravitational potentialenergy of a 7.0-kg mass on the surface of the Earth. 2. Calculate the gravitational potentialenergy of a 7.0-kg mass at an altitude of 400 km. 3. Take the difference between the resultsfor parts B and A. 4. Compare with mgh, where400 km. 1. Calculate the gravitational potentialenergy of a 7.0-kg mass on the surface of the Earth. 2. Calculate the gravitational potentialenergy of a 7.0-kg mass at an altitude of 400 km. 3. Take the difference between the resultsfor parts B and A. 4. Compare with mgh, where400 km. 2. Calculate the gravitational potentialenergy of a 7.0-kg mass at an altitude of 400 km. 3. Take the difference between the resultsfor parts B and A. 4. Compare with mgh, where400 km. 3. Take the difference between the resultsfor parts B and A. 4. Compare with mgh, where400 km. 4. Compare with mgh, where400 km.

Explanation / Answer

Gravitational potential energy is simply mgh and is in units ofJoules (J) for energy where m is mass, g is acceleration ofgravity, and h is height above reference level. So: 1.) mgh (7)(9.8)(0) 0 J 2.) mgh (7)(9.8)(400000) 27,440,000 J

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