assign9 - Massachusetts Institute of Technology - Physics...

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Massachusetts Institute of Technology - Physics Department Physics - 8.01 Assignment #9 November 17, 1999. It is strongly recommended that you read about a subject before it is covered in lectures. Lecture Date Material Covered Reading #29 Fri 11/19 Exam Review Lectures 16 thru 24 Mon 11/22 Exam #3 Handout of 11/15 #30 Wed 11/24 Simple Harmonic Oscillations - Energy Considerations Page 389 – 395 Torsional Pendulum Page 396 – 397 #31 Mon 11/29 Forced Oscillations - Normal Modes - Resonance Page 399 – 403 Natural Frequencies - Musical Instruments Page 438 – 445 Take Notes! #32 Wed 12/1 Heat - Thermal Expansion - Conductivity Page 515 – 527 Due Wednesday, Dec 1, before 4 PM in 4-339B. 9.1 Short Questions a) A car accelerates. Treating the car (including the tires) as one system, what force causes the system to accelerate (i.e., what force equals Ma )? (i) The force of friction, (ii) the force of the motor, (iii) none of the above. b) The kinetic energy of the car increases as it accelerates, so work is being done on the car. What force is doing this work? (i) The force of friction, (ii) the force of the motor, (iii) none of the above. c) John is holding a computer monitor, with a mass of 25 kg, at a constant height. He complains
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assign9 - Massachusetts Institute of Technology - Physics...

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