Essential Cosmic Perspective, The, Books a la Carte Edition (8th Edition)
Essential Cosmic Perspective, The, Books a la Carte Edition (8th Edition)
8th Edition
ISBN: 9780134532455
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 14, Problem 46EAP

Surviving the Plunge. The tidal forces near a black hole with a mass similar to that of a star would tear a person apart before that person could fall through the event horizon. Black hole researchers have pointed out that a fanciful “black hole life preserver" could help counteract those tidal forces. The life preserver would need to have a mass similar to that of an asteroid and would need to be shaped like a flattened hoop and placed around the person’s waist. In what direction would the gravitational force from the hoop pull on the person's head? In what direction would it pull on the person's feet? Based on your answers, explain in general terms how the gravitational forces from the “life preserver" would help to counteract the black hole’s tidal forces.

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Essential Cosmic Perspective, The, Books a la Carte Edition (8th Edition)

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