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To show that a simple pendulum executes simple harmonic motion, it is necessary to assure that ___________

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To show that a simple pendulum executes simple harmonic motion, it is necessary to assure that ___________

(a) Length of the pendulum is small

(b) Amplitude of oscillation is small

(c) Mass of the pendulum is small

(d) Acceleration due to gravity is small

I have been asked this question by my college director while I was bunking the class.

I'd like to ask this question from Wave Motion in division Waves of Engineering Physics I

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Correct option is (b) Amplitude of oscillation is small

For explanation: Motion is simple harmonic only when the amplitude of oscillation is small because only then f is proportional to x.

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