1. The problem statement, all variables and given/known data A spring is standing upright on a table with its bottom end fastened to the table. A block is dropped from a height 3 cm above the top of the spring. The block sticks to the top end of the spring and then oscillates with an amplitude of 10 cm. What is the oscillation frequency? 2. Relevant equations Not sure if this energy equation applies. 1/2k A^2 = 1/2 k x_0 ^2 + 1/2 m v_0 ^2 w = 2 pi / T T = 2pi root( m/ k) f = 1 /T w = root ( k/m) 3. The attempt at a solution I really have no clue on how to start this problem. But i believe i can use the first energy equation to find k . But i am really stuck. Can you guys help me out.