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This question contains multiple pans: (a) to (c). Consider the 65 kg ice skater being pushed by two other skaters in the figure shown. Include units as appropriate below. (3) Find the magnitude of Fm and the angle 9, given that F1 : 255 N and F2 : 205 N Fm: , l9: This question is a continuation from the previous question Consider the 65 kg ice skater being pushed by two other skaters in the figure shownt Include units as appropriate belowt In part (a) we found the magnitude of Fmt and the angle 6 of the ice skater being pushed by two other skaters' (b) What is her initial acceleration if she is initially stationary and wearing steel-bladed skates that point in the direction of Fm? (Refer to data given in Table 5.1 in Urone). a1 = (c) What would instead be her acceleration if she was already moving in the direction of FM? (12: Note: You can earn partial credit on this problem The terminal speed of a person falling in air depends on their mass and the area they present to the air (their crosssectional surface area) Find the terminal speed of a skydiver of mass 85 kg falling in a head-down position through air (their drag coefficient: 0470, and pm,- = 1.21 kg/m3) with a cross sectional surface area of 0.13 ml. Include units as appropriate. 11;: Two teams of nine members each engage in a tug of war' The first has an average mass per member of 67 kg and exerts an average force of 1320 N horizontally. The second has an average mass per member of 73 kg and exerts an average force of 1365 N horizontallyt Treat the mass of the rope to be negligible and the rope to be inextensible. Include units as appropriate below. (a) What is the magnitude of the acceleration of each team? a = 0.321 m/s/'Z (b) What is the tension in the section of rope between the two teams? (It is helpful to sketch and analyze a free body diagram for each team.) T' Wu \"an. v ulkhllt'll.' mum Two children pull a third child on a saucer sled as shown in the figure below by applying forces F1 : 12 N and F2 : 8 N at angles a : 45\" and = 30. What is the acceleration of the 49 kg sled and child system? Note that the direction of the acceleration, and hence the direction of the frictional force, is not given. Its direction should be given counterclockwise from the positive horizontal axis. Include units as appropriate below. a = , angle = in compass direction |