PASCO CI-6538 Rotary Motion Sensor - Manual (Page 30)

®
Model No. CI-6538 Rotary Motion Sensor
29
Analysis:
1. Calculate the expected (theoretical) value for the final angular velocity and
record this value in Table 3.1.
2. Calculate the percent difference between the experimental and the
theoretical values of the final angular velocity and record in Table 3.1.
Questions:
1. Does the experimental result for the angular velocity agree with the theory?
What percentage of the rotational kinetic energy was lost during the
collision? Calculate the energy lost and record the results in Table 3.1.
Initial angular velocity
Final Angular velocity
(experimental value)
Mass of ring (M
1
)
Mass of ring (M
2
)
Inner radius of ring (r
1
)
Outer radius of ring (r
2
)
Radius of disk (R)
Final Angular Velocity
(theoretical value)
% Difference between final
and angular velocities
% KE lost
1
2
---I
i
ω
i
2 1
2
--- – I
f
ω
f
2
1
2
---I
i
ω
i
2
--------------------------------------- %KE lost=
Table 3.1: Data and Results