For simple harmonic motion of an object of mass \( m \), (a) \( \mathbf{F}=-m \omega^{2} x \) (b...

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For simple harmonic motion of an object of mass \( m \),
(a) \( \mathbf{F}=-m \omega^{2} x \)
(b) \( \mathbf{F}=-m \omega x \)
(c) force always acts in the opposite direction of displacement
(d) Both (a) and (c)
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