## Essential University Physics: Volume 1 (4th Edition) Clone

$tan^{-1}(\frac{L}{w})$
Recall, with an unstable equilibrium, the box is "on the edge," meaning that, if released, it will readily tip either direction. When considering the geometry behind this point, we can obtain the following expression: $tan\theta = \frac{L}{w}$ $\theta = tan^{-1}(\frac{L}{w})$