A 0.113-kg block is suspended from a spring. When a small pebble of mass 27 g is placed on the block, the spring stretches an additional 5.5 cm. With the pebble on the block, the block oscillates with an amplitude of 13 cm. Find the maximum amplitude of oscillation at which the pebble will remain in contact with the block.
There is no diagram for this problem. I just have no idea where to start. Do you use conservation of energy theorem to solve?