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a mass attached to the lower end of a vertical spring causes the spring to extend by 25mm to its equilibrium position. The mass is then displaced a further 20mm and released. a trace of the vibration and time mesurements are taken. From these mesurements it can be seen that the displacement from the equilibrium position is 19.2mm when the time is 0.05s

A) calculate the expected frequency of vibration

B) calculate the maximum acceleration of the mass

C) calculate the maximum velocity of the mass

2. Homework Equations

i belive the frequency formule to be f=1/T Hz, or the displacement formule x=Asin(wt+o) both of which im sure are part of the solution but i can not see how to use them with the info given

3. The Attempt at a Solution

i am having an problem knowing were to start with this as i belive the key is finding out the weight of the Mass any help or pointers would be greatfully recived

many thanks