# rev4s11 - TA Tomoyuki Nakayama Monday February 7 2011 PHY...

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TA: Tomoyuki Nakayama Monday, February 7, 2011 PHY 2048: Physics 1 with Calculus, Spring 2011 Review: Chapter 6.1-6.5 The purpose of this review is to refresh your memory. Physics is a cumulative subject, so make it sure you understand basic concepts and typical problem solving techniques in previous chapters before moving on to a new chapter! ________________________________________________________________________________ A. Friction A toy chest and its contents have a combined mass of 20 kg. The coefficient of kinetic friction between the toy chest and floor is 0.4. A child attempts to move the chest across the floor by pulling on an attached rope. What is the minimum force required to move the chest? B. Uniform Circular Motion In the figure, a car moves around a banked circular track of radius R = 80 m. The bank angle is 15º and the coefficient of static friction between the car and the track is 0.20. What maximum speed can the car have to move without slipping?

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rev4s11 - TA Tomoyuki Nakayama Monday February 7 2011 PHY...

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