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# ps03 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of...

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MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics Physics 8.01 Problem Set 3: Newton’s Laws Solutions Website: http://web.mit.edu/8.01t/www/ Textbook: Young and Friedman, University Physics Twelfth Edition Students are responsible for preparing in advance for class. Sept 22/23 W03D2 Application of Newton’s Second Law, Experiment 1: Force and Motion Reading Assignment: Young and Freedman Chapter 4.1-4.6, 5.1-5.3, 12.1-12-2, Experiment 1: Force and Motion Sept 24 W03D3 Quiz 2 Kinematics; Group Problem Solving: Force Sept 27/28 W04D1 Circular Motion Reading Assignment: Young and Freedman 3.4, 5.4-5.5 Sept 29/30 W04D2 Examples of Circular Motion Reading Assignment: Young and Freedman: 3.4; 5.4-5.5, Experiment 2: Circular Motion Oct 1 W04D3 Quiz 3 Force and Linear Motion; Group Problem Solving: Circular Motion

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Week Four Reading Questions are posted on the daily webpage for September 27/28 (W4D1) and September 27/28 (W4D2). Problem 1: Wiping Up The handle of a floor mop of mass m makes an angle ! with the vertical. Let μ be the coefficient of friction between the mop and the floor. Neglect the mass of the handle. a) Find the magnitude of the force F directed along the handle required to slide the mop with uniform velocity across the floor. b) If ! is smaller than a certain angle 0 ! , the mop cannot be made to slide no matter how great a force is applied. Find 0 ! . Problem 2: Particle Physics A particle of mass m enters a region horizontally at time t = 0 with speed v 0 midway
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