📘 strength of materials

1. **Problem Statement:** a. Draw the free body diagram of a cable car of mass 20,000 kg pulled up an inclined track at angle $\alpha = 30^\circ$.

1. **Problem 1: Axial deformation and lateral contraction of a red brass bar under axial load** Given:

1. **Problem 1: Axial deformation and lateral contraction of a red brass bar** Given:

1. **Problem 1(a): Calculate the temperature increase $\Delta T$ at which the two bars come into contact.** Given: