As mass on a spring increases, the period of motion (one full up and down} increases / decreases / remains the same. As the gravitational pull (Jupiter) on a spring increases, the period of motion increases / decreases / remains the same. As the spring constant increases, the period of motion increases / decreases / remains the same. Amplitude is the displacement (meters) from the equilibrium position. Does the amplitude of a spring's movement depend upon period? Yes / No What effect does a planet's gravitational field g have on the period of motion? Is it affecting the period? Explain why