A4 practical: Measuring moment of inertia example results
Acceleration with masses = 0.0066 ms-2 Acceleration without masses = 0.019 ms-2 hanging mass = 0.100 kg Diameter of pulley = 3.3 cm (radius = 0.0165 m) Distance between masses and pivot = 0.20 cm Spinning masses = 0.2714 kg I = mgr2/a Iwith = 4.04 x 10-2 kgm2 Iwithout = 1.406 x 10-2 kgm2 Imasses = 2.67 x 10-2 kgm2 Σmr2 = 2.17 x 10-2 kgm2 The larger value is consistent with the torque being less than mgr.