Rotational Dynamics

C and F Blocks had their graded learning experiences for circular motion today and will move into rotational dynamics tomorrow.

B Block sat down and took a good hard look at the concept of torque, the rotational analogue of force. Torque depends not only on the magnitude of the applied fore, but also the location of the force relative to the axis of rotation. The angle at which the force is applied also matters, as only the force component that is perpendicular to the rotational arm contributes to torque. We looked at a variety of examples that highlighted the role of lever arm and angle on torque and took time to nail down the mathematical finery of the topic. Tomorrow, we'll expand on the contrast between point masses and extended objects by taking on center of mass and rotational equilibrium.

E Block began work on their rotational dynamics lab. Took folks awhile to get comfortable working with the equipment, but all groups were actively collecting angular acceleration data by the period's end. Tomorrow, we will continue to examine the relationship between torque, angular acceleration and moment of inertia. Take time tonight to plan out tomorrow's data collection and, perhaps, doing some reading on moment of inertia.