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The total mechanical energy of a harmonic oscillator is independent of:
AMass
BTint
CMist
DTime
Answer & Solution
Correct answer: D. Time
1. Kinetic and potential energy each change through the cycle.
2. Their sum is worked out using a trigonometric identity.
3. The bracket in that expression comes to unity.
4. So the total mechanical energy is independent of time.
_Source: NCERT Class XI Physics Part II, Ch 13 'Oscillations'_
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