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EXAMPLE 1.6:

Determine the torsional spring constant of the steel propeller shaft shown in Fig. 1.30

EXAMPLE 1.8 :

The boomAB of the crane shown in Fig.(a) is a uniform steel bar of length 10 m and area of crosssection 2,500 mm2. A weight W is suspended while the crane is stationary. The cable CDEBF ismade of steel and has a cross-sectional area of 100 mm2. Neglecting the effect of the cableCDEB, find the equivalent spring constant of the system in the vertical direction.

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