# Rotational Motion.docx - Objective The object of this...

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Objective:The object of this experiment was to determine the moment of inertia (also known as rotational inertia) of a free-rotational system by applying the known torque and measuring the resulting angular acceleration of the system.Idisk=(=1/2MR^2)= 10.2 x 10^-3Angular Acceleration = 0.055 rad/sFrictional torque= (10.2 x 10^-3)(-0.055)= -5.61 x 10^-4 N*mApplied Mass (kg)Angular Acceleration (rad/s^2)Applied Torque (N)Radius Spindle (N*m)0.0550.010.540.0270.0350.370.330.0170.040.420.390.0200.0450.470.460.0230.0500.560.550.0280.0600.630.590.0300.06050.670.590.0300.08050.910.790.0400.10051.270.980.0500.30051.482.900.150Radius of Spindle (m)Mass of Platter (kg)Diameter of Platter (m)Radius of Platter (m)0.05 1.417 0.240.12Procedure: 1.Measure and record in Table 1 the mass(M) of the platter, its diameter (D), and the radius of the central spindle (r)2.Go on the computer and use the software Rotational Motion to record your data3.Set the platter rotating and with the mouse button click on the “photogate test” to start. Make sure everything is working properly with photogate by running a few tests.