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Unformatted text preview: PHYSICS 7A FINAL REVIEW CHRIS FRANCE This is some review material that should help you prepare for the final. I will post solutions to the questions after the review session on Friday. I have no more information than you do as to what Dave will ask on the final, so please use this study guide judiciously 1. Motion of Rotating Bodies Predominately chapter 8 from the book, but most of the rotational dynamics are related to linear concepts in chapters 5-7. You need to make sure you understand conservation of energy and Newton’s 2nd Law. • Understand the ideas of torque, angular acceleration, angular momentum and moment of inertia. • Understand how linear motion quantities relate to rotational motion. I.e: ω = v/r . • Understand how all the concepts of linear motion have rotational analogies. Newton’s 2nd Law: ~ F = m~a → ~ τ = Iα . Kinetic Energy: K l = 1 2 mv 2 → K r = 1 2 Iω 2 . Conservation of momentum: ~ p i = ~ p f → ~ L i = ~ L f . • Understand the motion of rolling bodies. The first few problems were from the midterm review... 1.1. Banked Curves. A car drives around a curve with radius 410 m at a speed of 32 m/s. The road is banked 5 . ◦ . The mass of the car is 1400 kg. a) What is the frictional force on the car? b) At what speed could you drive around this curve so that the force of friction is zero?...
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This note was uploaded on 04/15/2008 for the course PHYS 7A taught by Professor Belanger during the Winter '07 term at UCSC.
- Winter '07