Question

The equation of simple harmonic motion may not be expressed as (each term has its usual meaning)

• A. $x=A \sin (\omega t+\phi)$
• B. $x=A \cos (\omega t-\phi)$
• C. $x=a\sin \omega t+b \cos \omega t$
• D. $x=A \sin (\omega t+\phi)+B \sin (2 \omega t+\phi)$

Answer 1

Answer: (D)

The fourth option is a superposition of two S.H.M.'s will different frequencies and time periods. Hence it is not a true S.H.M