Ch 10. Vibrations dy Multimedia Engineering Dynamics Free Vibs. Undamped Free Vibs. Damped Forced Vibration Energy Method
 Chapter - Particle - 1. General Motion 2. Force & Accel. 3. Energy 4. Momentum - Rigid Body - 5. General Motion 6. Force & Accel. 7. Energy 8. Momentum 9. 3-D Motion 10. Vibrations Appendix Basic Math Units Basic Equations Sections Search eBooks Dynamics Statics Mechanics Fluids Thermodynamics Math Author(s): Kurt Gramoll ©Kurt Gramoll

 DYNAMICS - CASE STUDY Introduction Problem Animation Click to view movie (192k) Drop-tubes are used to simulate weightlessness for various experiments. The experiment container is stopped at the bottom of the tube by a spring and damper. Since the equipment can be quite delicate, the deceleration of the container, and hence its motion, is very important. What is known: container mass m = 17 kg impact velocity v = 13 m/s spring constant k = 715 N/m damper constant c = 100 N-s/m Problem Diagram Question What is the motion of the container after it impacts the spring and damper at the bottom of the tube? Approach Determine the differential equation of motion. Solve the equation of motion for the displacement. Apply the initial conditions.