A machine with a mass of 250 kg is placed on isolator and the corresponding free vibration records is as shown in Figure. Determine the type of damping, its stiffness and damping constant. Consider the first 2 cycles. 0.01 0.008 0.006 0.004 0.002 0 -0.002 -0.004 -0.006 -0.008 -0.01 0 0.5 1 1.5 2 2.5 3 3.5 t (1)x

after solving, pls explain why u got the answer really need an explanation thank u so much pls explain in sentences. will rate

The 8kg body is moved to the right of the equilibrium position and released from rest at time t = 0. The viscous damping coefficient is 23NS/m and the spring stiffness, K is 38N/m. Determine the damping factor (ratio) of the system. Note: Give your answer to 3 decimal places. Other Parameters: Logarithmic Decrement (8): Answer: 2ng 2T C 8 = In = In1 = 5 wnTd = 5wn X2 Xn+1 1-5 wa 2m k Damping Ratio (5): 5= 2vkm 2mn V(21)2+8 Frequency of damped vibration (wa): wa = 1-Wn Undamped Forced Vibration: Frequency Ratio (): r- Xp-x sin w t Next page Hous page Type here to search

Can you please show the complete solution of the image below. Thanks! Subject: Mechanical Vibration

The graph shows the displacement versus time of a mass in a mass-damper-spring system. Which of the following could be the damping ratio of the system? x(t) in 0,5 O 0.65 O 0.38 O 1.22 0.12 1.5 t 20

Please answer question number 3

Select the right answer for each of the following: 1- The damped vibrational system is. system, (c) none of these, (d) false statement. (a) conservative system, (b) nonconservative (a) viscous (b) solid 2- When a system vibrates in a fluid medium, the damping is (c) Coulomb. 3- When an initial excitation exerted on a vibrational system results in - ippearance. (a) natural frequency. (b) resonance. (c) beating. (d) none of these. 4- Undamped vibration is characterized by no loss of 1) (a) speed, (b) acceleration, (c) mass, (d) energy. (a) mass, (b) damper, 5- Vibratory system should at least consists of a spring and - (c) mass and damper.

The answer should be in Handwritten format.

(a) The position-time plot of a spring-mass-damper system is as shonn Find the damped frequency. Find the logarithmic decrement. Find the damping ratio. Spring Mass Damper 12 Time Position

4. The vibration amplitude decreases to one fifth of the starting amplitude after 5 cycles. Compute the damping ratio.