Pile drivers are heavy, metal hammer used to drive posts into the ground when constructing a building. One such pile driver with a mass of 200 kg was lifted 3 meters above the ground then released, driving a beam 8 cm into the ground. What is the speed and exerted force of the pile driver if a 60-N frictional force is exerted by the guide rails on the pile driver.

Pile drivers are heavy, metal hammer used to drive posts into the ground when constructing a building. One such pile driver with a mass of 200 kg was lifted 3 meters above the ground then released, driving a beam 8 cm into the ground. What is the speed and exerted force of the pile driver if a 60-N frictional force is exerted by the guide rails on the pile driver.

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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