Answer
(d) one-fourth as great
Work Step by Step
Since, $g=G\frac{M}{r^{2}}$
When r=2r, g will be $\frac{1}{2^{2}}=\frac{1}{4}$ i.e. one-fourth as great of original g value.
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 7 - Circular Motion and Gravitation - Learning Path Questions and Exercises - Multiple Choice Questions - Page 258: 17
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