Angular Acceleration Notes
Notes:
Teaching Ideas and Suggestions:
- As a pre-lab activity to prepare students for the actual lab,
- As a post-lab activity as a check of student understanding of the actual lab,
- As a stand-alone activity in situations in which the actual equipment is not available or its set-up is not feasible.
There are three variables which can be altered in this lab. The amount of mass attached to the string can be set to 0.10 kg, 0.20 kg, or 0.30 kg. Each successive increase in mass results in an increase in the tension force upon the spindle and an increased torque. The number of platters that are attached to the rotating spindle can also be changed from one to two to three. Increase the number of spindles increases the rotational inertia of the spindle and rotating system. Finally, the spindle radius can be set to 0.01 m, 0.02 m, or 0.03 m. Each successive increase would cause the application of the tension force on the spindle to move further from the axis of rotation. This increase in distance would result in an increase in the torque on the spindle and rotating system.
The Physics Classroom has prepared a student activity sheet for use with this simulation. Teachers are welcome to download and use it with their classes. View Student Activity Sheet.

Related Resources:
- The Calculator Pad:
Our recently-revised Calculator Pad section has a complete collection of problems on all sorts of torque and rotation topics. There are 8 problem sets on the topic of Rotational Dynamics. Each successive problem set becomes progressively more difficult than the one before it and they would make great follow-ups to this Interactive.
View Rotation and Torque at The Calculator Pad
- Concept Builders:
There are several Concept Builders on torque and rotation topics. Many would be suitable either as a follow up or a preface to this Interactive. The following would be worth considering:
Torque
Balanced vs. Unbalanced Torques
Linear and Angular Velocity
Angular Acceleration
Visit: Angular Acceleration Interactive
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