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JEE PHYSICS MCQ: OSCILLATIONS

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Which of the following quantities are always negative in a S.H.M

(\overrightarrow F = \,force,\,\,\overrightarrow V \, = \,velocity,\,\,\overrightarrow a \, = \,acceleration,\,\,\overrightarrow r \, = \,displacement)

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Correct option: B

\overrightarrow a \, \cdot \overrightarrow r

Option B is correct because in SHM, acceleration and displacement are always in opposite directions, making their dot product always negative.

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