• A mass on a spring driven by a vibrator shows the phase shift between the driving force and mass, above and below the resonant frequency.
    • F(0) = 0.90Hz
    • F(90) = 0.95Hz (resonant freq.)
    • F(180) = 0.99Hz

        (set generator amplitude at 1/4)
        (red tape must be minimum 60 cm above table)
        (use 2.5 cm light duty spring and special 100 g mass with closed hook)