A 1 kg mass at height 5 m with g = 9.8 m/s^2 has gravitational potential energy relative to the ground. What is it?

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Multiple Choice

A 1 kg mass at height 5 m with g = 9.8 m/s^2 has gravitational potential energy relative to the ground. What is it?

Explanation:
Gravitational potential energy near Earth is calculated as m g h. With a mass of 1 kg at a height of 5 m and g = 9.8 m/s^2, the energy is 1 × 9.8 × 5 = 49 joules. So the energy relative to the ground is 49 J. This energy increases with mass, height, and the strength of gravity, and would be zero if the mass were at ground level. The other numbers would come from different heights or masses, but for the given values the energy is 49 J.

Gravitational potential energy near Earth is calculated as m g h. With a mass of 1 kg at a height of 5 m and g = 9.8 m/s^2, the energy is 1 × 9.8 × 5 = 49 joules. So the energy relative to the ground is 49 J. This energy increases with mass, height, and the strength of gravity, and would be zero if the mass were at ground level. The other numbers would come from different heights or masses, but for the given values the energy is 49 J.

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