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An object performs S.H.M. of amplitude 5...

An object performs S.H.M. of amplitude 5 cm. and time period 4 sec. If timing is started when the object is at the centre of the oscillation i.e., x = 0 then calculate.
(iii) The maximum acceleration of the object.

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(iii) Maximum acceleration `a_("max") = omega^2 A`
`=(0.5 pi)^2 xx 5=12.3` cm/`"sec"^2.`
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