PLEASE HELP! Joe is new to his job. His manager assigns another employee to help him settle into his work. The employee assists Joe in setting up his system, explains his job roles, and encourages Joe in his responsibilities. Nathan, on the other hand, is an intern at a robotics firm. Because he is new to the workforce, his manager asks him to observe another engineer carrying out his duties. Joe is undergoing a process called (evaluating, mentoring, accrediting, training.) . Nathan is undergoing a process called (networking, observing, job shadowing, mentoring.) I NEED HELP FOR WHAT IS IN THE PARENTHESIS PLEASE !!!

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.