SECTION B Question 2 (a) Answer each of the following for the crank loaded and supported as shown in Fig. 2(a). (i) Sketch the free-body diagram of the crank. (ii) Calculate the magnitude of the...

Extracted text: SECTION B Question 2 (a) Answer each of the following for the crank loaded and supported as shown in Fig. 2(a). (i) Sketch the free-body diagram of the crank. (ii) Calculate the magnitude of the resultant force supported by the pin at point B. 20 N-m 120 N 50 mm B 50 mm 125 mm Fig. 2(a) (b) Two men are sliding a 100 kg crate up an incline as shown in Fig. 2(b). The lower man pushes horizontally with a force of P = 500 N and the coefficient of kinetic friction is 0.4. Answer each of the following: (i) Sketch the free-body diagram of this system. (ii) Calculate the tension T which the upper man must exert in the rope to maintain motion of the crate. 15 100 kg He = 0.40 30 Fig. 2(b) Page 5 of 10