Discussion
Which component damps the oscillation of a spring?
Answer: B
A spring alone would oscillate for many cycles, so a damper converts the energy to heat by forcing fluid through restrictions. The name shock absorber is a misnomer, since the spring absorbs the shock. An anti-roll bar is a spring, not a damper. A symptom that appears under one condition and not another is what narrows the diagnosis quickly. Tracing the requirement back to the physical constraint that produces it makes the answer follow. Framing the question as which quantity the change acts upon makes the answer follow without calculation.
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