PASCO ME-8930 SMART TIMER - Manual (Page 33)

012–06734A Smart Timer
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Calculations
Record the results of the following calculations in Table 4.3.
1. Subtract the “friction mass” from the hanging mass used to accelerate the apparatus to
determine the mass, m, to be used in the equations.
2. Calculate the experimental value of the rotational inertia of the ring and disk together.
3. Calculate the experimental value of the rotational inertia of the disk alone.
4. Subtract the rotational inertia of the disk from the total rotational inertia of the ring and
disk.
Note: This calculation will be the rotational inertia of the ring alone.
5. Calculate the experimental value of the rotational inertia of the disk about its diameter.
6. Calculate the theoretical value of the rotational inertia of the ring.
7. Calculate the theoretical value of the rotational inertia of the disk about its center of
mass and about its diameter.
8. Use a percent difference to compare the experimental values to the theoretical values.
Rotational Inertia for the
Ring and Disk Combined
Rotational Inertia for the
Disk Alone
Rotational Inertia for the
Ring
Rotational Inertia for the
Vertical Disk
Theoretical Experimental % Difference