Question

03 A man is doing inclined bench sit up. The dimensions of the inclined bench are L 130 cm, L2 25 cm, d 12.5 cm and a can be adjusted with the range of [30, 45"]. The person has a weight of 600 N, with the centre of mass indicated as G 1) The restrainer assembly AB as indicated in picture (a) works as a single module to hold the lower legs in a position that restrains their movement during the sit-up exercise. It can be regarded as equivalent to ONE form of support. Analyse the function of the restrainer AB to determine what particular type of support it resembles and explain why. (5 marks) 2) Based on the analysis in 1), draw the free body diagram of the man's body with the posture as shown in picture (b) (5 marks) (10 marks)

Answer 1

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