(adsbygoogle = window.adsbygoogle || []).push({}); The problem statement, all variables and given/known data

The position of a an air-track cart that is oscillating on a spring is given by (14.0cm)cos[(12.0s-1)t]. At what value t after t=0 is the cart first located at x=2.0 cm?

The attempt at a solution

y = Acos(wt+∅)

y = 14cos(12t)

2 = 14cos(12t)

(1/7) = cos(12t)

12t = cos^-1(1/7)

t = cos^/1(1/7) / 12

t = 6.816 seconds,

incorrect.

Does anyone have any advice on how to proceed with this question?

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# Homework Help: Air-Track Cart Oscillating on a Spring, solve for time

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