A machine (weight mg = 3000 N) is installed on a flexible base. The static deflection of thebase due to the weight of the machine is 7.5 cm. Measurements revealed that the machinevibrates at resonance with an amplitude of 1 cm when the base vibration amplitude is 0.25 cm.Determine the damping coefficient c of the base. Consider the resonant condition. Kone (mg = 3000 N) on asennettu joustavalle alustalle. Alustan staattinen painuma koneenpainon takia on 7,5 cm. Mittauksissa havaittiin, että kone värähtelee resonanssissaamplitudilla 1 cm kun alustan värähtelyn amplitudi on 0,25 cm. Määritä alustanvaimennuskerroin c.Select one:O a. c = 703 Ns/mO b. c 803 Ns/m○ c. c = 603 Ns/mO d. c 903 Ns/m

Damping coefficient (c)c=903Ns/mOption d is correct. Explanation:

Answered: A machine (weight mg = 3000 N) is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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3.5. A spring-mass is excited by a force F, sin wr. At resonance, the amplitude is measured to be 0.58 cm. At 0.80 resonant frequency, the amplitude is measured to be 0.46 cm. Determine the damping factor of the system.
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A machine of mass 112.7 kg is mounted on four parallel springs each of stiffness 3.2 x 105 N/m. When the machine operates at 58.0 Hz, the machine's steady state amplitude is measured as 0.5 mm. What is the magnitude of force transmitted to the foundations of the machine at this speed? The damping in the system is negligible. (Express answers to 3sf) Answer: 3.49
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A structure that can be idealized as a SDOF system has a mass 100 kg, a stiffness of 40 kN/m and a damping ratio of 0.10. If it is subjected to a harmonic dynamic force given by p(t) = 500 sin(15 t) N, determine (a) the dynamic amplification under steady-state conditions; (b) the maximum velocity of the steady state vibration; and (c) the maximum amplitude if the forcing frequency was equal to the system frequency (a resonant condition).
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A block of mass 50 kg supported by a lining material made of rubber as shown in fig. When the block placed on the lining, the lining of static deflection is 10 mm. When the vibrator act with force F = 200sin50t N found the vibration amplitude is 2 mm. Determine i. the stiffness coefficient of the lining ii. The natural frequency i. the damping coefficient lining iv. the force exerted by the lining to the floor. vibrator 50 kg
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