Physics 101 Introduction to Mechanics 

March 22 Rotational Dynamics  



Kinematics
There is no new physics here we're still
talking about constant acceleration, forces, and conservation of energy.
We will simply be using new terminology to describe the circular motion.
We just will be using a different kind of coordinate system.
How would you solve this
No problem, right? Okay, now try this one: A wheel has a constant angular acceleration
a= 0.35 rad/ sec^{2}. It starts from rest with an arbitrary
reference line horizontal, at angular position q_{o}=0.
What is the angular displacement of the reference line (and hence the wheel)
at t= 18 sec? What is the wheel's angular velocity at t= 18sec?


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