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## Homework Statement

An oscillator consists of a block attached to a spring (k = 125 N/m). At some time t, the position (measured from the system's equilibrium location), velocity, and acceleration of the block are x = 0.800 m, v = -11.3 m/s, and a = -119 m/s2

(a) calculate the frequency of oscillation (Hz)

(b) calculate mass of block (kg)

(c) calculate the amplitude of motion (m)

## Homework Equations

v(t) = -angular frequency(displacement)sin(phase)

a(t) = - angular frequency^2(displacement)cos(phase)

phase = angular frequency(t) + phase angle

## The Attempt at a Solution

-11.3 = -angular frequency (.8) sin (angular frequency x t + phase angle) but i have 3 variables

i feel like there is some simple and fairly easy way to do this... i just dont know what it is

thank you for the help

Alex