Haha sooo before I moved here I used to be a cheerleader...this is a pretty bad video but the only one I could find. In the stunt on the right I do a full down. Similar to what ice skaters do when they do jumps and spins, I bring my arms in to spin. You have to throw your arms down with enough force and speed to make at least one revolution before landing.
Before I'm thrown in the air when my arms are extended, I have a larger Inertia then when they're close to my body. According to conservation of angular momentum, my inital inertia x intital angular velocity must equal final inertia and angular velocity. Since bringing my arms in decreases inertia, making it easier for my body to spin, there must be an increase in angular velocity to compensate.
No comments:
Post a Comment