Q70 / 75 · VITEEE 2021 · Physics

For a particle executing S.H.M. the displacement $x$ is given by $x=A \cos \omega t$. Identify the graph which represents the variation of potential energy (P.E.) as a function of time $t$ and displacement $x$. Figure

  • Correct answer
    A
    I, III
  • B
    II, IV
  • C
    II, III
  • D
    I,IV

Solution

In $x=A \cos \omega t$, the particle starts oscillating from extreme position. So at $t=0$, its potential energy is maximum.

Hence, the correct answer is option: 'A'.

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