Q7. The diagram below shows a man doing two stages of a pull up. In both diagrams the man is stationary. Stage 1 Stage 2 (a) Complete the sentence. Choose the answers from the box. equal to less than more than (b) In stage 1 the downwards force of the man on the bar is the upwards force of the bar on the man. The man has a mass of 85 kg Gravitational field strength = 9.8 N/kg Calculate the weight of the man. Use the equation: weight = mass gravitational field strength (2) (c) (2) (1) Weight= N The man raises his body a vertical distance of 0.63 m to go from stage 1 to stage 2 Calculate the work done by the man. Use your answer to part (b) Use the equation: (d) The man was not moving at stage 2 (e) Work done = How much work is done by the man at stage 2? Work done = A woman uses the bar to do a pull up. The woman has a mass of 62 kg She accelerates at 11 m/s Calculate the resultant force on the woman. Use the equation: work done = force distance force = mass x acceleration Force N