this here is the problem.... Use the equations below. (Note that the direction is indicated by the sign in front of the equations.) x = (0.0553 m) cos(4.094t + 0.14π) v = −(0.226 m/s) sin(4.094t + 0.14π) a = −(0.927 m/s2) cos(4.094t + 0.14π) (a) Determine the first time (t > 0) that the position is at its maximum (positive) value. s (b) Determine the first time (t > 0) that the velocity is at its maximum (positive) value. s i have no idea where to start, or how to do this.
they didnt give an angle. but I'm guessing since we want x to equal what ever number is there, then cos must equal 1 right?
so (0.0553 m) cos(4.094t + 0.14π) is max when cos(4.094t + 0.14π) = 1 that is when (4.094t + 0.14π) = ....?