A 20-kg mass is placed on a horizontal frictionless surface and then connected by two springs with spring constants k1 = 5.0 N/m and k2 = 3.0 N/m to walls as shown in the figure.What is the period of oscillations for the 20-kg mass if it is displaced slightly to one side? 
Definitions:
Type II Error
A statistical error in which a false null hypothesis is not rejected, also known as a 'false negative'.
Null Hypothesis
A statistical hypothesis that assumes no significant difference or effect exists within a certain set of observations.
Significant Difference
A statistical measure indicating that the observed difference between two datasets is likely not due to random chance.
Confidence Interval
An assortment of values, coming from statistical review of samples, aiming to envelop the value of an unspecified population parameter.
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