Class b aircraft take off

#1. For a single engine Class B aeroplane, how does runway slope affect allowable take-off mass, assuming other factors remain constant and not limiting?

#2. For this question use Performance Manual CAP 698 SEP 1 Figure 2.1. With regard to the take-off performance chart for the single engine aeroplane, determine the take-off speed for (1) rotation and (2) at a height of 50ft. Given:- O.A.T : ISA + 10 Pressure Altitude: 5,000 ft, Aeroplane mass: 3,400 IBS, Headwind component: 5 kt, Flaps: up, Runway: Tarred and Dry

#3. For this question use Performance Manual CAP 698 SEP 1 Figure 2.2. With regard to the take-off performance chart for the single engine aeroplane determine the take-off distance over a 50ft obstacle height. Given:- O.A.T : 30°C, Pressure Altitude: 1,000ft, Aeroplane Mass: 2,950 IBS, Tailwind component: 5kt, Flaps: Approach setting, Runway: Short, wet grass, firm subsoil, Correction factor: 1.25 for the current runway conditions.