Answer
(d) the mechanical energy is not conserved.
Work Step by Step
When a non-conservative force acts on an object, the mechanical energy is not conserved.
Mechanical energy is only conserved when conservative force act upon the object.
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 5 - Work and Energy - Learning Path Questions and Exercises - Multiple Choice Questions - Page 172: 15
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