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Q6. An engine bedplate is secured by steel holding down bolts 20 mm diameter and 180 mm long. Each bolt is tightened onto a steel sleeve of 25 mm inside diameter, 50 mm outside diameter and 100 mm long. After tightening the tensile force in the bolt is 4 kN. Calculate EACH of the following:

(a) The stress in each bolt;

(b) The strain energy stored in the bolt material;

(c) The stress in the sleeve;

(d) The change in length of the sleeve.

Note: Modulus of Elasticity for steel = 200 GN/m²