Well most of you know that the formula of distance in an oscillating (harmonic) movement is x = r.coswt. I know how to get at this formula using the circular movement. But I gotta reach it by using the acceleration.

K.................................O...........obje ct............. L

|------------------------|-----------o------------|

...................................|_________|

...........................................x

x = distance from the center

k = N/x (like the k of a spring)

m = mass

a = acceleration

At any point, F = x*k

and F = m*a so

a = x*k/m

But I cant figure out how to find the sinusodial distance formula from here.

Thanks for all your help..