I think a key idea to think about in this question is the true change in height. If the final state of the system is the spring being compressed by "x" and the initial state of the system is "h" above the spring, we need to consider that the ball's height has decreased by a total of h+x. After that, it is a simple conservation of energy problem.
Hi Sunil,
Thank you for your question.
I think a key idea to think about in this question is the true change in height. If the final state of the system is the spring being compressed by "x" and the initial state of the system is "h" above the spring, we need to consider that the ball's height has decreased by a total of h+x. After that, it is a simple conservation of energy problem.
For your reference, this is how I would answer:
Does this answer your question?