Answer:
The force constant is 
The energy stored in the spring is 
Explanation:
From the question we are told that
The mass of the object is 
The period is 
The period of the spring oscillation is mathematically represented as

where k is the force constant
So making k the subject

substituting values


The energy stored in the spring is mathematically represented as

Where x is the spring displacement which is given as

substituting values


Answer:Shifted towards Left by distance of 2.243 m
Explanation:
Given
Mass of john 
Mass of barbara 
John is standing at 
Barbara is standing at 




Now if they change their Position then



Thus we can see that center of mass shifted towards left by a distance of
because heavier is shifted towards left
Answer: Either electromagnetic radiation or energy is the answer to your question.
<em>im confused hold on imma send you a link to the answer</em>Explanation: