1. Neglecting friction, what force is necessary to keep a weight of 100 lbs. stationary on an inclined plane, the perpendicular height of the plane being 4 ft. and the length of its incline 14 ft.?
2. The length of an inclined plane is 15 ft. and its height 7 ft. What weight will a power of 78 lbs. sustain on the plane, neglecting friction?