A 30 kg box is resting on an incline plane as shown in Figure Q2. The coefficient of static friction between the crate and the slope is 0.3 Figure Q2 a) Draw the free body diagram of the box and indicate clearly all forces acting on it. (4 marks) b) Determine the minimum force P to prevent the box from sliding down the plane. (10 marks) c) Determine the friction force between the box and the plane.