Q3 Suppose we had an object with mass of g submerged in water with the top part touching the atmosphere pressure P, that is shown in Figure Q3. Mg PA Fig. 23 Determine a) the force balance equation when it reaches equilibrium; (2 marks) b) the pressure P acting on the bottom part of an object in term of (2 marks) atmosphere pressure Po, density pand depth h; and c) the total force exerted on the outside of a 30 cm diameter circular submarine window at depth of 1000 m if the atmosphere pressure Po is (6 marks) 101.3kPa and the density of water is 1000 kg/m