i'm stuck on that question also
 
        
             
        
        
        
Answer:
THE MINIONSSSSSSS AYEEEEE
Explanation:
 
        
                    
             
        
        
        
I am not sure if this is the answer you are looking for but a earthquake occurs when the plates shift. 
Hope this helped. 
        
             
        
        
        
The period will be the same if the amplitude of the motion is increased to 2a
What is an Amplitude?
Amplitude refers to the maximum extent of a vibration or oscillation, measured from the position of equilibrium.
Here,
mass m is attached to the spring.
mass attached = m
time period = t
We know that,
The time period for the spring is calculated with the equation:

Where k is the spring constant
Now if the amplitude is doubled, it means that the distance from the equilibrium position to the displacement is doubled.
From the equation, we can say,
Time period of the spring is independent of the amplitude.
Hence, 
Increasing the amplitude does not affect the period of the mass and spring system.
Learn more about time period here:
<u>brainly.com/question/13834772</u>
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