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An object is undergoing simple harmonic motion with period T_1 and amplitude A. At t = 0 the object is at x = 0. How far is the object from the equilibrium position at time t?

well i come up with:

A*cos((2*pi/T_1)*t)

but i get that theres something wrong with my trigonometry, i cant figure out what im doing wrong

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# Homework Help: Simple Harmonc Motion

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