(1) You need to move an object having mass of 23 kg. In one case, you are pulling at an angle of 30. In another case, you are pushing it at the same angle. Frictional coefficient = 0.50. (a) Compute the force required during pulling (Fpull) and pushing (Fpush). (b) Compute Fpull and Fpush when the angle is 45. (c) At what angle, Fpull = Fpush? (d) Compute Fpull and Fpush on a frictionless surface. 15 points (2) A school is playing $0.30 per kWh for electric power. To reduce its power bill, the school installs a wind turbine with a rated power of 40 kW. If the turbine operates 2000 hours per year at the rated power. Determine the amount of electric power generated by the wind turbine and the money saved by the school per year. 10 points (3) A man whose mass is 50 kg stands on his feet on a floor. The total contact area of his two feet with the floor is 0.035 m. (Take, g = 9.81 ms) (a) How much is the pressure exerted by him on the floor? (b) What pressure will he exert on the floor if he stands on one foot? 10 points