- #1

ibysaiyan

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## Homework Statement

A spiral spring of natural length 300mm is suspended vertically from a fixesd point with ita upper end fixed .A mass of 0.150 kg is suspended at rest from the lower end of the spring to increase its length to 355mm.The mass is then pulled down a further distance of 30 mm and released from rest so it osciallates about equlibrium.

Calculate

*spring constant k

*time period of oscillations.

*the max speed and max ke of the mass.

*max and minimum tension in the spring.

## Homework Equations

k=fx, time= 2pie/omega,k.e=1/2mv2

## The Attempt at a Solution

* for the first bit i got k =0.150x0.085=0.01275Nm/s (not sure)

*how to find time period, as T=2pie/omega or 1/f =( hm..am i missing something here