The energy dissipation in the shaft due to internal friction is usually small and can be neglected. However, in certain cases where the dissipation function cannot be ignored, the expression for 𝑅𝑖Ri assumes a specific form. 𝑅𝑖=12𝑞˙𝑇𝑖𝐶𝑖𝑞˙𝑖Ri=12q˙iTCiq˙i ...
Scandinavian elan, a comfortable cabin, and top-notch safety tech make the S60 a worthy premium sedan—as long as you’re not a hardcore driving enthusiast.