Answer:
650......................
We will apply the concepts related to Newton's second law. At the same time we will convert everything to the system of international units.

The values of the velocities are,


We know that the acceleration is equivalent to the change of the speed in a certain time therefore



Now applying the Newton's second law we have,



Therefore the approximate magnitude is 8516.36N
Answer:

Explanation:
From the question we are told that:
Period of spring 
Initial Position of Mass 
Final Mass period 
Generally the equation for the Mass location is mathematically given by


