Investigating how the mass of the hovercraft affects the angular velocity of the system Variables: Independent : Mass of the hovercraft Dependant : angular velocity, period Constant : spring constant (15.9 (N/m)) and speed (1.8 (m/s)) Data collection: Mass (g) : 1g Period (s) 1 0.01s Angular velocity (rads-1) 52 0.36 77 0.44 103 0.51 129 0.57 155 0.62 180 0.67