The position of an object that is oscillating on an ideal spring is given by the equation x = (12.3 cm) cos[(1.26s-1)t]. At time t = 0.815 s,
(a) how fast is the object moving?
(b) what is the magnitude of the acceleration of the object?
What will be an ideal response?
Answer: (a) 13.3 cm/s (b) 10.1 cm/s2
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