3. A mass m (2.0 kg) is attached to a horizontal spring of spring constant k (25 N/m) which is held stretched a distance x = 0.25 m from its relaxed position by a force, and then released. The spring compresses, pulling the mass. Assume there is no friction. a. Determine the speed of the mass when the spring returns to its relaxed position. b. Determine the speed of the mass when the spring is compressed by x/2.

3. A mass m (2.0 kg) is attached to a horizontal spring of spring constant k (25 N/m) which is held stretched a distance x = 0.25 m from its relaxed position by a force, and then released. The spring compresses, pulling the mass. Assume there is no friction. a. Determine the speed of the mass when the spring returns to its relaxed position. b. Determine the speed of the mass when the spring is compressed by x/2.

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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