Final answer:
The function that models the simple harmonic motion with an amplitude of 6.25 inches and frequency of 60Hz is x(t) = 6.25 cos(120πt).
Step-by-step explanation:
The student is looking for a function that models the simple harmonic motion with given properties. Given an amplitude of 6.25 inches and a frequency of 60Hz, and knowing that the displacement is at its maximum at t=0, the appropriate function in the form of x(t) = A cos(2πft) can be used. Here, A is the amplitude and f is the frequency. Since the frequency is 60Hz, the angular frequency ω would be ω = 2πf = 2π(60).
Therefore, the function modeling the simple harmonic motion is x(t) = 6.25 cos(120πt).