Which of the following becomes maximum at the mean position?
Correct answer: D. K.E
- A. P.E
- B. Acceleration
- C. Displacement
- D. K.E
Explanation
The correct answer is K.E, as kinetic energy is maximum at the mean position. In simple harmonic motion, the mean position is where the object has its highest velocity and hence its highest kinetic energy. The formula for kinetic energy is K.E. = 1/2 * m * v². At the mean position, velocity is maximum, which makes kinetic energy maximum. Other energy forms like potential energy are at their minimum at this point. The potential energy is maximum at the extreme positions where the object is momentarily at rest. Similarly, acceleration is maximum at the extreme positions and zero at the mean position, while displacement is zero at the mean position.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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