4- A trunnion of diameter 12.363" has to be cooled from a room temperature of 80°F before it is shrink fit into a steel hub. The equation that gives the diametric contraction, in inches of the trunnion in dry-ice/alcohol (boiling temperature is - 108°F) is given by: -108 AD = 12.363 [ (-1.2278 × 10-1"7² + 6.1946× 10°T +6.015×10“ dT Use two segment Trapezoidal rule to find the contraction.

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