Question-3) [Total 20 points] A light spring with a force constant k is suspended from the ceiling as shown. A block of mass m is attached to it. Initially, the block is held so that the spring is not stretched. The block is then released. The acceleration due to gravity is g. k (Part a ) [5 points] What is the maximum elongation of the spring in the subsequent motion of the block? (Part b) [15 points] Eventually, after multiple up-and-down cycles, the block comes to rest. How much heat is generated during the motion of the block?