In Fig. 1, the three bearings are at the same elevation.(a) When all bearings are on solid...

In Fig. 1, the three bearings are at the same elevation.

(a) When all bearings are on solid supports, find the value of R2.

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(b) When the center bearing is 0.040 in. lower than the other two, find the value of R2.

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(c) Suppose the center bearing is resting on an elastic support that could be represented by a spring of constant equal to 30,000 lb/in. Find R2.

Figure 1