A particle of mass \( 0.3 \mathrm{~kg} \) is subjected to a force \( F=-k x \) with \( k=15 \mat...

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A particle of mass \( 0.3 \mathrm{~kg} \) is subjected to a force \( F=-k x \) with \( k=15 \mathrm{~N} / \mathrm{m} \). What will be its initial acceleration if it is released from a point \( 20 \mathrm{~cm} \) away from the origin
[AIEEE 2005; BCECE 2006]
(a) \( 5 \mathrm{~m} / \mathrm{s}^{2} \)
(b) \( 10 \mathrm{~m} / \mathrm{s}^{2} \)
(c) \( 3 \mathrm{~m} / \mathrm{s}^{2} \)
(d) \( 15 \mathrm{~m} / \mathrm{s}^{2} \)
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