Below are sets of values for the spring constant k, damping constant b, and mass m for a particle in damped harmonic motion. Which of the sets takes the longest time for its mechanical energy to decrease to one-fourth of its initial value? 
Definitions:
Depth Symbol
A notation used in technical drawings to specify the depth of a feature, such as a hole or recess.
General-use Section
A common or standard section of documentation that can be applied across multiple types of projects or products, detailing widespread regulations or specifications.
Counterbore
A cylindrical flat-bottomed hole that enlarges another hole, typically to allow a screw or bolt head to sit flush with or below the surface of a material.
Spotface
A machined flat surface around a hole, usually to provide a seating area for a fastener head or washer.
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