What is the Spring Amplitude Problem?

[<3Science]

Homework Statement

A block on a spring if pulled to the right and released at t=0s. It passes x=3.00 cm at t=0.685s, and it passes x=-3.00 at t=0.886s.

a. what is the angular frequency?
b. what is the amplitude?

Homework Equations

w = 2pi / T
w= sqrt k/m

The Attempt at a Solution

I don't really need a numerical value or anything, but I'm just totally confused as to how I'm supposed to figure this out?? Wouldn't the amplitude just be 3 and the difference in time is the period? The amplitude is apparently 15 =S

 

[izzy123]

(max-)|-----------------|(-3)------------------|(3)---------------------|(max+)
you would be right if the block oscillated between 3 and -3 but it sounds like in your case at t=0 it is released at a max point to the right of x=3 and passes through x=3 and -3 later as shown in my crude drawing above.