The 38-lb collar A is released from rest in the position shown and slides up the 30° inclined bar with negligible friction due to the action of the constant force P = 45 lb applied. on the wire. Assuming that the maximum deformation of the spring is 6 inches, determine a) The work, in lb ft, done by the force P on the collar to bring it from the position shown to the position of maximum deformation of the spring.

The 38-lb collar A is released from rest in the position shown and slides up the 30° inclined bar with negligible friction due to the action of the constant force P = 45 lb applied. on the wire. Assuming that the maximum deformation of the spring is 6 inches, determine a) The work, in lb ft, done by the force P on the collar to bring it from the position shown to the position of maximum deformation of the spring.

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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The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
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