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Questions and answers by
Vasunder Macharla
Answers (1)
We know the function is sinusoidal because the gum is moving on the rim of a circle. We need negative cosine because it is at ground level at t = 0. We also need the time of one revolution: (15mi/hr)(5280ft/mi)(1hr/3600s) = 264in/s (264in/s)(1 rev/28Пin)
