MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI
MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI
9th Edition
ISBN: 9780136904496
Author: Bennett
Publisher: PEARSON
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Chapter 18, Problem 50EAP

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 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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MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI

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