A pilot flies an airplane at a constant speed of 790 km/h in the vertical circle of radius 1220 m. Calculate the force exerted by the seat on the 96-kg pilot at point A and at point B.

A banked circular highway curve is designed for traffic moving at 60 km/h. The radius of the curve is 200 m. Traffic is moving along the highway at 40 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow cars to take the turn without sliding off the road? (Assume the cars do not have negative lift.)

As shown above, a bead is at the end of a string and moves in a horizontal circle with a constant speed of 1.43 m/s. The length of the string, L, is 185 cm and the mass of the bead is 27.0 g. The angle, 0, is known to be 19.0°. As outlined below, use two different approaches to find the tension, T, of the string. Assume that the air resistance is negligible. Although this is a multiple-choice question that you will answer on Bb and I will not be collecting the details of your work, I urge you to follow the steps outlined below to solve it. We will do the FBD of the bead together in class before this problem is due. Hint: be careful with your units. (a) Use the GFS method to show and explain each step of your work. (b) Draw a sketch of the bead. Next, clearly draw and label the FBD of the bead, showing all the external forces that are acting on it. Each external force must be represented by an arrow that is properly labeled. Be sure to show explicitly the x and y coordinate system you…

A child of mass 40.0 kg is in a roller coaster car that travels in a loop of radius 7.00 m. At point A the speed of the car is 10.0 m/s, and at point B, the speed is 10.5 m/s. Assume the child is not holding on and does not wear a seat belt. (a) What is the force of the car seat on the child at point A? (b) What is the force of the car seat on the child at point B? (c) What minimum speed is required to keep the child in his seat at point A?

A 55.2 kg ice skater is moving at 4.07 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.805 m around th pole. (a) Determine the force exerted by the horizontal rope on her arms. (b) Compare this force with her weight by finding the ratio of the force to her weight.

A circular curve of highway is designed for traffic moving at 75 km/h. Assume the traffic consists of cars without negative lift. (a) If the radius of the curve is 260 m, what is the correct angle of banking of the road? (b) If the curve were not banked, what would be the minimum coefficient of friction between tires and road that would keep traffic from skidding out of the turn when traveling at 75 km/h? (a) Number Units (b) Number Units

A pilot flies an airplane at a constant speed of 660 km/h in the vertical circle of radius 1210 m. Calculate the force exerted by the seat on the 81-kg pilot at point A and at point B. в 1210 m 660 km/h Answers: NA = i N NB = i N

In an old-fashioned amusement park ride, passengers stand inside a 3.90 m diameter hollow steel cylinder with the backs against the wall. The cylinder begins to rotate about a vertical axis. Then the floor on which the passengers are standing drops away! If all goes well, the passengers will "stick" to the wall and not slide. Clothing has a coefficient of static coefficient of friction against steel in the range of 0.690 to 1.0 and a kinetic coefficient in the range 0.480 to 0.70. A sign next to the entrance says "No children under 30 kg allowed." What is the minimum angular speed in rpm (do not enter units) for which the ride is safe? Assume that the local acceleration due to gravity is -9.80 m/s². Submit Answer Tries 0/10

A curved portion of highway has a radius of curvature of 65 m. As a highway engineer, you want to bank this curve at the proper angle for a steady speed of 22 m/s.(a) What banking angle should you specify for this curve?(b) At the proper banking angle, what normal force and what friction force does the highway exert on a 750 kg car going around the curve at the proper speed?

A stuntman whose mass is 69 kg swings from the end of a 3.1-m-long rope along the arc of a vertical circle. Assuming that he starts from rest when the rope is horizontal, find the magnitudes of the tensions in the rope that are required to make him follow his circular path at each of the following points. army medio docume (a) at the beginning of his motion kN (b) at a height of 1.5 m above the bottom of the circular arc Fobiology kN (c) at the bottom of the arc kN hapter 3 Need Help? Watch It Read It