The presence of a net torque will cause an angular acceleration
\tau_{net} = I\alpha
in doing example 12.11 in your book, you will need to also use angular kinematics after you find the angular acceleration.
Here is a problem solving example of rotational dynamics.
[ciscode|rev=1|tool=elmsmedia|item=4583|entity_type=node|render=display_mode|display_mode=mediavideo]
Here is the pdf of the problem solved in the video.
[ciscode|rev=1|tool=elmsmedia|item=4584|entity_type=node|render=display_mode|display_mode=document]
Check your understanding! [ciscode|rev=1|tool=elmsmedia|item=4472|entity_type=node|render=display_mode|display_mode=h5p]
An interesting sets of problem involves pulley that now have mass and require a net torque to be able to turn. Review example 12.12 and here is a full worked out problem on the Atwood machine that we have seen earlier.
[ciscode|rev=1|tool=elmsmedia|item=4587|entity_type=node|render=display_mode|display_mode=mediavideo]
Here is the pdf for this problem solving video. [ciscode|rev=1|tool=elmsmedia|item=4588|entity_type=node|render=display_mode|display_mode=document]