2. The machine shown below, with the rotating unbalance, operates a speeds between18 and 60 rad/sec. Determine the minimum value of damping coefficient c neededto keep the amplitude of vibration below .3 inches.M = .026 lb sec2/inm = .0026 lb sec2/inr = 2 in.K = 3.75 lb / inRotating UnbalancewwKX₁MCTy

Refer to the picture belowExplanation:

Answered: 2. The machine shown below, with the…

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

See similar textbooks

Similar questions

for the system shown in Fig. (2) the values m = 1,750 kg, c = 3,500 N-s/m, k = 7x 105N/m, a = 1.25 m and b = 2.5 m. 1. Draw F.B.D. 2. find equation of motion & wd. 3. 4. Determine the value of the critical damping. Calculate time response. k rigid link m
elapse before the amplitude of the free vibration 2.22 A one-degree-of-freedom system has an undamped natural frequency of 20 Hz and a criti- cal damping ratio of 0.005. It is released with no initial velocity at 60 mm from the static equilib- rium position. Approximately how much time will does not exceed 10 mm?
Revert Done 4.a. Linearise the relationship between the force F and the rotational velocity N of a mechanical flyweight governor F-kN² at the operating point (F., No). 4.b. Calculate the absolute error due to linearisation e = | Flin Freal| at operating point (F. =4 N, No 200 rev/min) for N=250 rev/min. 0 G
PART A k = 2.000 N/m M=0.125kg A 0.125kg mass is attached to a horizontal spring of spring constant k = 2 N/m and set into ocillation. Assume frictionless floor. 4 rod /s What is the angular frequency w of the vibration? o = How about the vibrating frequency f in Hz? f = 0.64 Hz. The position of the mass is given as x = A cos (ot + o). With your calculated value of w, fill in the following table (don't forget to set your calculator to "radian mode"). Each row represents a different oscillation with the same spring, pay attention to sign: v (m/s) .092 -.14 a (m/s²) 3076 -32 -.8712 -.64 A (m) t (s) x (m) -.02 F (N) .04 -.04 фо (rad) 0.03 2.5 0.3 - 212 1.36 0.04 0.02 0.2 0.06 .0545 0.1 0.4 .076 1.08 -. 08 0.04 0.3 |-26 - .25 2.94 -0.2 0.5 0.04 0.1 0.1 PART B Each of the rows in the following table represents an oscillation of a different spring and mass. Fill in the blanks. E is the total energy. Vmax, v, Xmax, and x are all positive in values. A (m) Vmax Xmax m (kg) k (N/m) E (J) x at…
A linear harmonic oscillator having a mass of 3.0kg is set into motion with viscous damping. if the frequency is 12HZ and if two successive amplitudes a full cycle apart are measured to be 4.65mm and 4.30mm, compute the viscous damping coefficient. Note: Give your answer to 3 decimal places x (t) Other Parameters: Logarithmic Decrement (6): Answer: x2 X, -In1 X2 21 C 8 = In =5wn Td = 5wn %3D Xn+1 a2m Damping Ratio (5): 5 = %3D t [s] 2vkm Cc 2man Frequency of damped vibration (wa): wa = Undamped Forced Vibration: Fo/k Frequency Ratio (r): r - p-xsin wt Next page ous page Type here to search
A single degree of freedom mass-spring-damper system is subject to vibration under the influence of a harmonic force. On my site, it is given as m=2 kg, k=800 N/m, c=64 Ns/m. The amplitude of the harmonic force is F0=256 N and its frequency is w= 20 rad/s. Answer the questions in options a, b, and c according to the given information. 1) Calculate the damping ratio of the system (ξ) a.1 b.0.7 c.0.9 d.0.8 2)Calculate the magnification factor (M) of the system. a.0.86 b.1.25 c.0.312 D.0.625 3-) Calculate the maximum vibration amplitude (X) (meters). a.0.2 b.0.1 c.0.4 D.0.3
2. Calculate the natural frequency and damping ratio for the system in figure below given the values m = 10 kg, c = 100 kg/s, k₁ 4000 N/m, k2 200 N/m, and k3 1000 N/m. = Assume that no friction acts on the rollers. Is the system overdamped, critically damped, or underdamped? C кий m k₂ k3
Calculate the natural frequency and damping ratio for the system shown in Figure below. Assume that no friction acts on the roller. Is the system overdamped, critically damped, or underdamped? 2 kN/m 3 kN/m 10 kN/m wwww www. 10 kg 4 kN/m ww 1 kN/m 1 kg/s
3. Calculate the natural frequency and damping ratio for the system in figure below. Assume that no friction acts on the rollers. Is the system overdamped, critically damped, or under- damped? 2kN/m www 3kN/m www 10kN/m www www 10kg 4kN/m www 1kg/s 1kN/m
A machine is supported on four steel springs. By neglecting damping, the natural frequency of vertical vibration the machine-spring system runs at f=200 cycles per minute. The machine generates a vertical force p(t)=posinot. When the machine runs at f₁ =30 cycle per minute the amplitude of vertical vibration is measured as u₁=0.2cm, at f₂=170 cycle per minute is u₂=1.042cm, and at f3-400 cycle per minute is u3=0.0248cm. Calculate the amplitude of vertical motion of the machine if the steel springs are replaced by four rubber isolators which provide the same stiffness, but introduce damping equivalent to -0.25 for the system. Evaluate the response of the system for frequency ratios r, respectively.
Problem 4-5: A second-order measurement system has a damping ratio of 0.6. Determine the range of w/wn for which the dynamic error remains less than 5%.
1. A system is needed to be designed as damped spring mass system. Calculate the amplitude of vibration. Stiffness=10 kN/m; mass 2Mg; and dashpot coefficient 2 kNs/m. It is subjected to a harmonic force = 500N @ frequency 0.5Hz

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS