Need help with question 20 please. BASIC CONCEPTS of the system shown in Figure

Question

Need help with question 20 please.

BASIC CONCEPTS of the system shown in Figure P1.8 relative to the spatial variable theta. Determine the equivalent stiffness of the system shown in Figure P1.9 relative to the spatial variable y. Determine the equivalent stiffness of the system shown in Figure PI.11) relative to the spatial variable x. Determine the equivalent stiffness of the system shown in Figure P1.11 relative to the spatial variable. The system in Figure P1.12 is a cantilever beam with a mass an a cable suspended from the end of the beam. Determine the equivalent stiffness of the system in terms of the spatial variable y. Referring to Figure 1.23. develop equations (1.115) through (1.118). A vibration isolation system similar to the one shown in Figure 1.23 is designed to have a static deflection of 0.5 in. We = 2.200 Ibf, I = 5 ft. a = 3 ft. w = 4 ft. and b = 3 ft. Determine the stiffness coefficients of each of the four springs (K_1,. K_2,. K_3, and K_4) and the total stiffness coefficient of the vibration isolation system.

Explanation / Answer

20) In the above figure the equivalent sfifness of the spring is given by:

spring Kt2 and Kt3 are in series so, Ke1 = Kt2 + Kt3

Now, the spring K1 and Ke1 are in parallel

So, the equivalent stifness of the above spring is given by:

1/Ke = 1/K1 + 1/Ke1

So, Ke = K1 + Ke1/ K1*Ke1

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