13:13) The needle of a sewing machine with MHS moves along an x-axis with a frequency of 2.5 Hz. At t = 0 the components of position and velocity are, respectively, +1.1 cm and -15 cm / s. a) Find the component of the acceleration of the needle to t = 0 b) Write equations for the components of position, velocity and acceleration of the point considered a function of time.

Question

anonymous · Answer

you mean SHM simple harmonic motion?! 
u know the general equation ?

anonymous · Answer

want to find the component of the acceleration of the needle to t = 0.

anonymous · Answer

yes i know..so u need to know the general equation..

anonymous · Answer

do not know; (

anonymous · Answer

u better learn that first then :P