Three equal springs of stiffness k lbfm are joined at one, Ask an Expert

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Three equal springs of stiffness k lbfm. are joined at one end, the other ends being arranged symmetrically at 1200 from each other, as shown in Fig. P6.2. Prove that the influence coefficients of the junction in a direction making an angle B with any spring is independent of Band equal to 1/1.5k.

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