Constants The airplane flies with constant velocity v along a circular path in the vertical plane. The radius of the airplane's circular path is 2500 m. The mass of the pilot is 71 kg Part A The pilot will experience "weightlessness" at the top of the circular path if the airplane exerts no net force on him at that point. Draw a free-body diagram of the pilot and use Newton's second law to determine the velocity v necessary to achieve this condition. Express your answer with the appropriate units. v = 157 m Figure Submit Previous Answers Correct Part B Suppose that you don't want the force exerted on the pilot by the airplane at the top of the path to exceed five times his weight. If he performs this maneuver at v = 200 m/s, what is the minimum acceptable radius of the circular path? (Figure 1) Express your answer with the appropriate units. P= 1359.15 Submit m Previous Answers Request Answer ? Incorrect; Try Again; 3 attempts remaining < Return to Assignment Provide Feedback Part B As shown, a cam has a shape that is described by the function r = ro (2.00- cos 0), where ro = 1.36 m. A slotted bar is attached to the origin and rotates in the horizontal plane with a constant angular velocity of 0.605 radians/s. The bar moves a roller having a mass of 16.9 kg along the cam's perimeter. A spring holds the roller in place; the spring's spring constant is 19.2 N/m. The friction in the system is negligible. When = 165, what are F, and Fe, the magnitudes of the cylindrical components of the total force acting on the roller? Express your answers numerically in newtons to three significant figures separated by a comma. View Available Hint(s) vec Fr.Fo= Submit ? N A 4970 lb car hits the crash barrier at 80 mi/h and is brought to rest in 0.11 seconds. Figure 1 of 1 Part A What average power is transferred from the car during the impact? (Figure 1) Express your answer with the appropriate units. ? % lb.ft P=1.31 10 S Submit Previous Answers Request Answer Incorrect; Try Again; 4 attempts remaining Provide Feedback As shown, two blocks, resting on different inclines, are connected by an inelastic cable that passes over a frictionless pulley (Figure 2). Block A weighs 14.0 lb and block B weighs 38.0 lb. The incline angles are 0 = 20.0 degrees and 02 = 47.0 degrees, and the coefficient of kinetic friction between the blocks and the inclines is = 0.100. When the blocks are released from rest, block B slides down its incline. What is the magnitude of block A's velocity, VA, after block B has slid 8.00 ft ? Express your answer to three significant figures and include the appropriate units. View Available Hint(s) VA Value Submit Units ?