4) A differential double acting cylinder and piston has a diameter of 85 mm and a piston rod diameter of 25 mm. Oil is supplied to the cylinder at a constant pressure of 5 MPa and a flow rate of 40 l/min. The length of the stroke is 0,8 m. Calculate: 300 40 mm Figure 3.36 a) The maximum and minimum forces exerted by the piston. b) The times for the in and outward movements of the piston. c) The maximum compression, in mm, of the oil in ne cylinder given that the bulk modulus for the oil is 2 GPa. (28,37 kN, 25,91 kN, 6,81 s, 6,22 s, 2 mm)