The engine is mounted on a foundation block which is spring-supported. The block and engine have total weight W and the engine, when running, creates an impressed force FF, sinot. Assume that the system vibrates only in the vertical direction, with the positive displacement measured downward, and that the total stiffness of the springs can be represented as k. What rotational speed @ will cause resonance? Given: W = 1500 lb Fo= 50 lb @ = 2 rad k = 2000 S lb ft 69900

The engine is mounted on a foundation block which is spring-supported. The block and engine have total weight W and the engine, when running, creates an impressed force FF, sinot. Assume that the system vibrates only in the vertical direction, with the positive displacement measured downward, and that the total stiffness of the springs can be represented as k. What rotational speed @ will cause resonance? Given: W = 1500 lb Fo= 50 lb @ = 2 rad k = 2000 S lb ft 69900

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

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter5: Three-dimensional Equilibrium

Section: Chapter Questions

Problem 5.15P: In Sample Problem 5.5, determine Oy with one scalar equilibrium equation.

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