Question: A block - spring system is in simple 8 points harmonic motion on a frictionless horizontal table. Its displacement varies with time according to x

A block-spring system is in simple
8 points
harmonic motion on a frictionless horizontal table. Its displacement varies with time according to x(t)=A cos(4t-4), where x is in meters and t is in seconds. The earliest time (t>0) when the block would have a maximum acceleration is:
A block - spring system is in simple 8 points

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