AP* Physics 1: Simple Harmonic More 2. A mass of 4.0 kg is placed on the end of a spring. The graph provided indicates the mass' poters energy as a function of distance from the equilibrium position. The total mechanical energy of fail position? system is 300 J. What is the value of the spring constant when the mass is -2.0 m from the equilibrio Potential Energy vs. Distance 400- 300 Potential Energy (J) 200 - 100- - 20 -1.0 10 20 Distance (m) 25 N/m 35 N/m 75 N/m 150 N/m 3. An object is attached to a spring and oscillates with amplitude A and period T, as represented on the graph provided. The nature of the velocity, v, and acceleration, a, of the object at time - I is best represented by which of the following? Displacement A Time A) Both the velocity and the acceleration are greater than zero. The velocity is greater than zero but the acceleration is less than zero. B) The velocity is greater than zero but the acceleration equals zero. C) D) The velocity equals zero but the acceleration is less than zero