Forces F1, F2, and F3 are applied to a soil nail to pull it out of a slope. If F2 and F3 a...

Forces F1, F2, and F3 are applied to a soil nail to pull it out of a slope. If F2 and F3 are vertical and horizontal, respectively, with the magnitudes shown, determine the magnitude of the smallest force F1 that can be applied and the angle α so that the resultant force applied to the nail is directed along the axis of the nail (direction α).

Figure P2.12