PHYS 2101 Lecture : Lecture18
Document Summary
Hw7 due tuesday (march 6) at 11:59pm: of ce hours mwf 12:30-1:30, exam 2 : still being graded , exam 3 : tuesday march 20 @ 6pm in lockett 16 (our section, exam 3 covers chapters 10-12. W = fdx 1 " d motion x1. Each of these rotational inertias go through the center of mass ! A wheel is something that exhibits both rotational & translational motion: rolling : the angle a wheel turns is related to the distance it travels. Assume a wheel turns an angle while rolling. A point on the edge goes an arc length s = "r. The same distance: rolling without slipping: the distance s the edge of the wheel moves equals the displacement x of the wheel x =!r. Wheel moving forward with constant speed vcom s = "r displacement: translation rotation. At point p (point of contact), wheel does not move: the distance a wheel travels after turning : x =!r.
