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Exploring Dual Gravity in "Upside Down"

"Upside Down" is a captivating science fantasy film that explores themes of love, class disparity, and the laws of physics in a universe that operates under a unique dual gravity system. The film begins with a voice-over, introducing us to a world defined by two neighboring planets—one known as "up top," which is affluent and highly developed, and the other, "down below," that is poor and underdeveloped.

The Mechanics of a Unique World

In this peculiar world, the laws of gravity dictate that objects are tethered to their planet of origin, which prohibits interaction between the two worlds. There are three main rules governing this dual-gravity system:

An object is solely influenced by the gravity of its own planet.