1. To conduct a lab experiment for the oscillations of a pendulum with a yielding support 2. investigate the simple pendulum 3. To prove that the distance (m) is directly proportional to period. Theory Theory states that T and d are related by the equation: T2 = kd3+ (4π2 l)/g where g is the acceleration of free fall and k is a constant. inquiry-based laboratory work. You are also encouraged to develop your own inquiry-based investigations that meet the same cognitive objectives. How This Manual Was Developed To create a model of excellence for the lab component in AP science courses, the College Board, in conjunction with the Lab Vision Team and Physics Lab