A block of mass 6kg lies on an inclined surface, with an angle of 30 to the horizontal. The block is held in equilibrium by a force of 49 N at angle 9 to the plane, as shown in Figure 3. 0 30* Figure 3 3 i) By taking g = 9.8 ms2, show that cos 5 ii) Find the normal reaction between the block and the surface.