College / Physics

Rotational Inertia

A known torque is applied to the three-step pulley on the Rotary Motion Sensor, causing a disk and ring to rotate. The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time. The rotational inertia of the disk and ring combination is calculated from the torque and the angular acceleration. The procedure is repeated for the disk alone to find the rotational inertia of the ring and disk separately.


Student Files

37_Rotational_Inertia_w_Data.cap 706.32 KB
37_Rotational_Inertia.cap 673.42 KB
37_Rotational_Inertia.docx 2.46 MB
37_ring_and_disk.JPG 74.36 KB
37_Freebody.jpg 167.02 KB
37_Pulley_Angle.jpg 194.80 KB
37_Rotational_Inertia_w_ring.jpg 353.34 KB
37_String_in_pulley.jpg 72.03 KB
37_Rotational_Inertia.pdf 127.43 KB
Source: Lab #37

Comprehensive 850 Physics System

Rotational Inertia