1. The problem statement, all variables and given/known data The motion of an object is simple harmonic with equation of motion x = (27.1 m) sin(16.0 t /s + 0.7). At what time after t = 0 will the displacement reach its first maximum (where velocity equals zero)? 2. Relevant equations (displacement)=Asin(freq.*t+phase) 3. The attempt at a solution "(27.1)(sin((16x)+.7))" into calculator. Where y=displacement and x=time. I calculate the first maximum to be at (5.58,27.1). Since the question asks for the time my answer would be 5.58 seconds. But this is wrong, and I'm not sure where I went wrong.. Any help greatly appreciated, Thanks!