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UIC Physics 105 Spring 2011 Written Homework II UIC Physics 105 Written Homework II Spring 2011 DUE IN CLASS February 8, 2011 Circle Your Instructor:...
problem on pg 7LONG PROBLEMS(points indicated per problem)You must show your work and/or write your answers clearly and legibly.Partial credit may be given. All numerical answers must include correct units.LP1) A block of mass m slides along a smoothtrack from one level to a higher level after passingthrough an intermediate valley. The higherlevel has a rough section of length L. After passingthis section the block slides head on into aspring. The block momentarily stops after compressingthe spring by d. The block initial speedis vo , the height difference is h, and the coefficient of kinetic friction is µ.a) Find the block’s velocity when it reaches the higher level. (9 points)b) Determine the spring constant k. (9 points)c) In terms of the other given variables (m, h, L, µ, and d), find the minimum value of vo in orderfor the block to return to its original position. (9 points)27
