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For example, if a 0500kg mass hung from a cuckoo clock is raised 100 m, then its change in gravitational potential energy is latex\begin{array}{lll}mgh&=&(0500\text{ kg})(980\text{ m/s}^2)(100\text{ m})\\\text{ }&=&490\text{ kg}\cdot\text{m}^2\text{/s}^2=490\text{ J}\end{array}\\/latexMar 01, 14 · Roller Coasters The main energy transfers that happens as a "car" travels along the track from the start of the ride to the end 1 The main energy transfers are between gravitational potential energy (GPE) and kinetic energy (KE), and the eventual decrease of mechanical energy as it transforms into thermal energyFor example, a roller coaster car possesses increasing gravitational potential energy as it is raised higher and higher along a track, due to the earth's gravitational field For most roller coasters, the gravitational potential energy of the cars at the peak of the first hill Gravitational Potential Energy Physics Gravitational potential energy roller coa