m A \"V\" \"mm\" 4 Forces in action OCR Physics A Exam-style questions 4 a A heavy metal beam of weight 12 kid is suspended at rest from the hook of a crane. The beam is held at an angle to the horizontal by two ropes AB and BC. The rope AB is at 55 to the vertical, and rope BC is at 20 to the vertical. Figure 4a shows this arrangement and the free-body diagram for the hook. fares in crane cable = 12 IN 55 I T1 :2 | T2 free bed},r diagram for hook Figure 4a i Mark on Figure 4a the position of the centre of gravity of the beam and label the point G. (1 mark) ii Determine the tension forces T1 and T2. T2 = N (4 marks)