As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. 5° P 30 kg 20°

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.55P: A wedge is used to prop up the 6000-lb block of marble. The wedge angle is =30, and the angle of...

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As shown in the figure, the coefficient of static friction for both wedge surfaces is 0.4 and that between the 30-kg concrete block and the 20° incline is 0.70. Determine the minimum value of the force P required to begin moving the block down the incline. Neglect the weight of the wedge. Note: please show step by step working out. Also double check final answer please. As this is a dynamic question. Please use sine rule to solve this. Thanks

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