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Transcribed Image Text:←HW 13 (Ch13)
Question 10 of 16
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Your answer is partially correct.
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(a) Number i 9.34E-4
(b) Number i
Several planets (Jupiter, Saturn, Uranus) are encircled by rings, perhaps composed of material that
failed to form a satellite. In addition, many galaxies contain ring-like structures. Consider a
homogeneous thin ring of mass 3.3 x 1022 kg and outer radius 4.5 x 108 m (the figure). (a) What
gravitational attraction does it exert on a particle of mass 85 kg located on the ring's central axis a
distance 4.4 x 108 m from the ring center? (b) Suppose that, starting at that point, the particle falls
from rest as a result of the attraction of the ring of matter. What is the speed with which it passes
through the center of the ring?
R
M
m
Units N
Units
0.05 / 1
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