AP Physics 1
6.2 Torque and Work
6.1 Rotational Kinetic Energy
Engineers test two wind turbine blade assemblies, Profile X and Profile Y, which both start from rest. The rotational inertia of each assembly, the final angular velocity achieved, and the time interval required to reach that final angular velocity are recorded in the table.
Which turbine profile experiences a greater net average torque during startup, and which profile has a greater net work done on it during startup?
| Blade Profile | Rotational Inertia (\(\text{kg} \cdot \text{m}^2\)) | Final Angular Velocity (\(\text{rad/s}\)) | Time Interval (\(\text{s}\)) |
|---|---|---|---|
| Profile X | \(200\) | \(4.0\) | \(2.0\) |
| Profile Y | \(600\) | \(3.0\) | \(6.0\) |
Which turbine profile experiences a greater net average torque during startup, and which profile has a greater net work done on it during startup?
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