Research suggests that students have both productive ideas about and difficulties with forces that cause both linear and rotational motion. What ideas do students have about rotational dynamics?
July 3, 2018
What did you notice in this episode? Talk to your neighbor about what you noticed.
Andrew says more work is done on the spool than the block. Do you agree?
Andrew says that Newton’s second law requires that the spool and the block cross the finish line at the same time. Do you agree?
Cory wants to think about the acceleration, which he feels Andrew has not addressed. What is Cory’s argument?
Brooklyn pulls a spool across the table. What might she be trying to accomplish?
Andrew expresses at least one idea that is not correct. Does his incorrect idea hinder the group’s progress? Why or why not?
What student ideas about rotational dynamics are indicated by this episode?