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write an equation for Simple Harmonic Motion if given: given: A = 4in, f =1.5(rad/s) max at t=0 => so, we have cosine function: x ( t ) = A cos ( ω t + ϕ ) where A is the amplitude measured in meters or inches, t is the time measured in seconds, ω is the angular frequency with units of inverse seconds, ϕ is the phase shift measured in radian since f= ω / 2π , then 1.5/s = ω / 2π (1.5*2π) /s = ω ω = (3π)(rad/s) ϕ =0..... (because maximum is at t=0) x ( t ) = 4cos ( 3π*t + 0 ) x ( t ) = 4cos ( 3π*t ) 2. leaving to you to tray

Yes, I will do 2 when time allows this weekend. As you know, I am moving soon. I am dealing with packing, need to start searching for a new place to live, several doctor appointments in the next couple of weeks, etc.