Suppose the ends of a 30-m-long steel beam are rigidly clamped at 0°C to prevent expansion. The beam has a cross-sectional area of 30 cm2. What force against the clamps does the beam exert when it is heated to 40°C? (αSteel = 1.1 × 10−5/°C, Ysteel = 20 × 1010N/m2).
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