PHYS 2101 Lecture : Lecture15
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Hw6 due wed. (feb 29) at 11:59pm on chapter 10. Hw7 due the following monday: of ce hours mwf 12:30-1:30, exam 2 : tuesday feb 28@ 6pm in lockett 16 (our section) Turning wheel: point on the edge moves further if the radius is larger. For rotational kinematics, it is easier to use radians: radian: Point on the edge moves a distance s along the arc s r. For rotational kinematics, it is easier to use radians. Rotation variables (theta) , (omega) , (alpha: rigid body rotation: object rotates uniformly (no bending), body rotating around z-axis: de ne a reference line that turns, view from above: rotation of the reference line. Angular acceleration of reference line d 2#(t) d"(t) Are angular quantities vectors: angular velocity & angular acceleration are, but not angular displacement, angular velocity vector: along axis of rotation. Curl the ngers of your right hand in the direction of the rotation.
