고체역학 (Beer) — Stress and Strain—Axial Loading: Problem 2.127

2.127 The brass strip AB has been attached to a fixed support at A and rests on a rough support at B. Knowing that the coefficient of friction is 0.60 between the strip and the support at B, determine the decrease in temperature for which slipping will impend. Brass strip: \( E = 105 \text{ GPa} \) \( \alpha = 20 \times 10^{-6}/^\circ\text{C} \) Dimensions: \( 3 \text{ mm} \) thickness, \( 20 \text{ mm} \) width, \( 400 \text{ mm} \) length between supports. Mass on support B: \( 100 \text{ kg} \).