Hi, can you please help me answer this?

5. A smooth inclined plane has a gradient of 1 in 6. Calculate the mass of a body that can be held in equilibrium on the plane by a force of 80 N when the force acts: (a) parallel to the plane (b) horizontally (c) at an angle of the 20 with the plane. 6. The crate in Figure 3.7 has a mass 350 kg and is subjected to a towing force P acting at an angle 01 = 20 with the horizontal. If the coefficient of static friction is 0.5, determine the magnitude of P to just start the crate moving down the plane. 02 = 10 Figure 3.7