"A 350g mass is suspended from your spring and allowed to reach the equilibrium position. Then you pull the mass down 3 cm further and release it. What would be the resultant force on the mass at the moment of release?"

I know that what I need to do is find the force, but I'm not sure how I should do that. If someone could walk me through this problem, I'd really appreciate it.

Question

"A 350g mass is suspended from your spring and allowed to reach the equilibrium position.  Then you pull the mass down 3 cm further and release it.  What would be the resultant force on the mass at the moment of release?"

I know that what I need to do is find the force, but I'm not sure how I should do that. If someone could walk me through this problem, I'd really appreciate it.

anonymous · Answer

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what are the contact forces at this point?
So you need to know an extra information about the k constant for that spring.