a car is driven at constant speed over a circular hill and then into a circular valley with the same radius. At the top of the hill, the normal force on the driver from the car seat is 0. The driver's mass is 75.8 kg. What is the magnitude of the normal force on the driver from the seat when the car passes through the bottom of the valley? N
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a car is driven at constant speed over a circular hill and then into a circular valley with the same radius. At the top of the hill, the normal force on the driver from the car seat is 0. The driver's mass is 75.8 kg. What is the magnitude of the normal force on the driver from the seat when the car passes through the bottom of the valley?
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- B Part A 2m A 17-kg ladder has a center of mass at G. If the coefficients of friction at A and B are uA = 0.3 and uB = 0.2, respectively, determine the smallest horizontal force that the man must exert of the ladder at point C in order to push the ladder forward. 1m O F= 120.2 N 1m O F= 166.8 N F= 288 N 50° O F= 204 N A Submit Request AnswerA sandwich board advertising sign is constructed as shown in Figure 5.39. Its mass is 8.40 kg. Calculate the tension in the chain assuming no friction between the legs and the sidewalk. NC) Carefully consider how the accelerations a and a2 are related. Solve for the magnitude of the acceleration, a1, of the block of mass my, in meters per square second. a1= Part (d) Find the magnitude of the tension in the rope, T, in newtons. T=
- D A 100-kg pilot takes his airplane into a 1.5-km vertical loop at a speed of 300 m/s at the bottom of the loop. If his speed remains constant, determine: a) The force of the seat onto the pilot at the top of the loop b) The force of the seat onto the pilot at the bottom of the loop c) The required speed of the plane at the top of the loop if the pilot were to appear weightlessAs a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.5 m/s. In the process, he moves his hand through a distance of 1.30 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.NSouth still displays with great pride the large sign boasting of their 1996 State Championship Girl's Basketball Team. The 44.2-kg sign hangs from two cables which make an angle of 39.8° with the horizontal. Determine the tension in each of the cables. Answer: N
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