What Is the Spring Constant and Angular Frequency of a Block-Spring System?

[pezola]

Homework Statement

A spring is hung from the ceiling. A 0.400 kg block is then attached to the free end of the spring. When released from rest, the block drops 0.150 m before momentarily coming to rest.

(a) What is the spring constant of the spring?

(b) Find the angular frequency of the block's vibrations.


Again, please explain what is going on here and the process to solve.

 

[lzkelley]

Consider the point at which the block comes to rest (after it has been attached and drops a little).
Can you draw a free body diagram?
What forces come into play?
How can you relate them to each other?