Question

the position of a particle is given by the expression x = 4cos (3πt+πi), where x is in meters and t is in seconds. Calculate the frequency, the period of the motion and the amplitude of motions.

Answer 1

$\omega=3\pi~\frac{rad}s,$

$T=\frac{2\pi}{\omega}=0.67~s,$

$A=4~m.$