5 The 80-kg ventilation door OD with mass center at G is held in the open position shown by means of a moment M applied at A to the opening linkage. Member AB is parallel to the door for the 30° posi- tion shown. Determine M. M 0.6 m 0 0.4 m A C 0.9 m B 30° G 0.4 m 0.8 m D 15 Determine the vertical clamping force at E in terms of the force P applied to the handle of the toggle clamp. 80 mm 12 mm 16 mm 160 mm 12 mm E B 5 mm 12 mm