Engineering 112 – Foundations of Engineering II
Review for Exam IV
· Definitions
o Linear to Angular Conversions: s = r q, v = r w, a = r a
o w = angular velocity (measured in radians per second) = 2pf
o P = period (measured in seconds) = 1/f
o f = frequency (measured in rpm or Hertz) = 1/P
o r = radius of the circular path
o Centripetal Acceleration = a = v2/r = r w2
o T = Torque = r F sin q
o L = Angular Momentum
§ L = r m v sin q (for a particle)
§ L = Iw (for a solid object)
§ I = moment of inertia (See table 21.2)
o UAE for Angular Momentum
§ Li + T t = Lf
· What is meant by centripetal force and centrifugal force? What’s the difference?
· Review tables 21.1 and 21.2.
· Expect to see exam questions similar to these:
o Example problems within the chapter: 21.1, 2, 3, 4, 5, 8, 9, 10(Use UAE)
o Problems at the end of the chapter: 21.1, 2, 3, 4, 5, 10, 11
o Homework 10 and 11