The Position of an Air-Track Cart That Is Oscillating on a Spring

question 89

Multiple Choice

The position of an air-track cart that is oscillating on a spring is given by x = (12.4 cm) cos[(6.35 s^-1) t]. At what value of t after t = 0 s is the cart first located at x = 8.47 cm?

• A) 4.34 s
• B) 0.108 s
• C) 0.129 s
• D) 7.39 s
• E) 7.75 s

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