D p and b determine the rate of change p v rough

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Unformatted text preview: of of speed of P. D P, and b) determine the rate of change P. v rough surfaces, m P µk r 53.13° O g Use the following parameters in your analysis: m = 8kg , µk = 0.2, r = 2m and v = 3m/sec. IV-56 Chapter IV: Particle Kinetics Homework Problem IV.54 mework Problems Given: Concrete block A (having a weight of WA ) is attached to log B (having a weight of WB ) with the cable-pulley system shown. The system is released from rest with log B resting on a rough incline (coefficient of kinetic friction µk ). ME 274 Find: For this problem: a) determine the direction of motion for the block A (you need to justify 4 your answer with analysis), and b) determine the acceleration of block A. rete block A (having a weight of WA) is attached to log B (having a ht of WB) with the cable-pulley m shown. The system is released rest with log B resting on a rough sB e (coefficient of kinetic friction µk). his problem, determine the direction of motion for the block A. You need to justify your answer with analysis. determine the acceleration of block A. O B sA µk ! ide appropriateUse the following parameters to receive full creditAfor this , WB = 400lb, µk = 0.2 and θ = 36.87◦ . free body diagrams in order in your analysis: W = 50lb e following parameter values in your analysis: WA = 50 lb , WB = 400 lb , = 36.87° . Given: Block B (of mass 2m) is able to slide along a smooth horizontal surface. Block A (of mass m) is able to slide along the rough top surface of block B, as shown in the figure. Initially, A is traveling to the right with a speed of vA1 , and block Chapter B is Particle Kinetics Homework IV: traveling to the left with a speed of v . B1 IV-57 Problem IV.55the velocity of block B when block A has to come rest relative to block Find: What is B? Write your answer as a vector. Use the following parameters in your Given: Block B (of mass 2m) is able to slide along a smooth horizontal surface. Block A (of mass analysis: along kg vA1 = 26 surface of block v 1 shown in the figure. m) is able to slidem = 25the ,rough top meters / sec andB,Bas = 10 meters / sec . Initially, A is traveling to the right with a speed of vA1 , and block B is traveling to the left with a speed of vB 1 . HINT: Consider applying the linear impulse momentum equation to the system Find: Determine of Avelocitytogether. B when block A has to come rest relative to block B. made up the and B of block A vB 1 rough smooth m vA1 2m B...
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This document was uploaded on 01/20/2014.

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