Which areas of physics are related to the act of playing drums? I'm musician (drummer) and I'm trying to figure out what can I study (related to Physics) for better understanding of the drumsticks and wrist movements, the force applied and the better way to apply it and introduce some theory in my training.
I'm really awful at physics, so I really don't know what areas are important (pressure, mechanics, acceleration?).
 A: As far as drumstick manipulation goes, some understanding of the principles of "simple machines" (the technical term) might help; understanding the fulcrum and the effects of varying the distance and magnitude of the force applied on the power and speed and force (three different things!) of the force eventually "exerted" on the drum head might help gain an intuition on what nuanced aspects of your grip affect what.
I know that when I was taking percussion lessons in high school, our instructor made a big deal/emphasis on the physics of minding your fulcrum -- positioning it relative to your force for maximal power and impact with minimal exertion.  He taught us to always be aware of the physics. 
That being said, if you are a drummer, there is a very good chance that you have centuries of research and development by the brightest minds in your field to build upon. The best resource would be this tradition you are inheriting of tried and true best practices and grips.  Grips not only optimized for best sound and minimal effort but also, most importantly, least chance of injury.  Once you have mastered those and understood the motivation behind each aspect of each grip, then that might be a time to begin exploring more things. But even still, it is hard to know what will injure you or cause damage in the long run when you try anything new. 
