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# rev8sp10 - TA Tomoyuki Nakayama March 1st March 2nd 2010...

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TA: Tomoyuki Nakayama March 1 st – March 2 nd , 2010 PHY 2048: Physics 1 with Calculus, Spring 2010 Review: Chapter 10.1-10.10 The purpose of this review is to refresh your memory. Physics is a cumulative subject, so make it sure that you understand basic concepts and typical problem solving techniques in previous chapters before moving on to a new chapter. ________________________________________________________________________________ A. Kinematics for Rotational Motions A drum rotates about its central axis at an angular velocity of 20 rad/s. It then slows down with constant acceleration. If it takes 5 s to stop, what is the number of rotation during the 5-s interval? B. Rotational Inertia. Four particles, each of mass 1 kg are placed at the vertices of a square with sides of length 0.2 m. The particles are connected by rods of negligible mass. What is the rotational inertia of the system about an axis that passes through one of the particles and is perpendicular to the plane of the square?   C. Equation of Motion in Angular Form A hanging block of mass 0.3 kg is attached by a massless string that passes over a pulley and connected to another block of mass 0.4 kg on a

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