Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- 2.22 A scissors jack is used to lift a load W. The links of the jack are rigid and the collars can slide freely on the shaft against the springs of stiffnesses k₁ and k₂ (see Fig. 2.63). Find the natural frequency of vibration of the weight in the vertical direction. Jecccee k₁ Collar TO W Shaft Link 1 FIGURE 2.63 Weight lifted by scissors jack. Collar k₂arrow_forward(b) A passenger car has a tyre spring rate of 18,900 N/m. The front suspension rate is 1,450 N/m and the rear is 1,050 N/m. Assume the front tyres are loaded to 10,000 N and rear tyres are at 7,900 N. (i) Solve the front suspension ride rate in N/m. (11) Evaluate the natural frequency at front suspension.arrow_forwardConsider the damped mass-spring system for mass of 1.5 kg, spring constant 10 N/m, damping 3 kg/s and an oscillating force 4.7 cos(@t) Newtons. That is, 1.5x" + 3x' + 10x = 4.7 cos(@t). What positive angular frequency o leads to maximum practical resonance? W = help (numbers) What is the maximum displacement of the mass in the steady state solution when the we are at practical resonance: C(@) = helparrow_forward
- Find the natural frequency (in Hertz) of the system illustrated in the following figure. K1=731 N/m, K2=496 N/m, K3=775 N/m M=0.2 kg, and L=2 m.arrow_forwardQUESTION 3 A machine tool, having a mass of m = 1000 kg and a mass of inertia of Jo = 300 kg.m², is supported on elastic supports, as shown in Figure Q2. If the stiffnesses of the supports are given by kl = 3000 N/mm and k2 = 2000 N/ mm, and the supports are located at 11 = 0,5 m and 12 = 0,8 m, determine the natural frequencies and mode shapes of the machine tool. Develop the state-space model. Use numerical integration to compute and plot the time response of the system (newtons) subject to your own initial conditions. m, k Figure Q3arrow_forward1. A thin disk attached to the end of an elastic beam has three uncoupled modes of vibration. The longitudinal motion, transverse motion and the torsional oscillations are all kinematically independent. Calculate the following for the system shown. a. Longitudinal stiffness b. Transverse stiffness c. Torsional stiffness mumm 65 cm r= 10 mm E-200 x 10° N/m² G=80 x 10º N/m²arrow_forward
- A transverse traveling wave on a taut wire has an amplitude of 0.200 mm and a frequency of 500 Hz. It travels with a speed of 196 m/s. (a) Write an equation in SI units of the form y=A sin (kx - vt) for this wave.(b) The mass per unit length of this wire is 4.10 g/m. find the tension in the wire.arrow_forwardI need the answer as soon as possiblearrow_forwardVibrationarrow_forward
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