Concept explainers
The pilot of an airplane executes a loop-the-loop maneuver in a vertical circle. The speed of the airplane is 300 mi/h at the top of the loop and 450 mi/h at the bottom, and the radius of the circle is 1 200 ft. (a) What is the pilot’s apparent weight at the lowest point if his true weight is 160 lb? (b) What is his apparent weight at the highest point? (c) What If? Describe how the pilot could experience weightlessness if both the radius and the speed can be varied. Note: His apparent weight is equal to the magnitude of the force exerted by the seat on his body.
Want to see the full answer?
Check out a sample textbook solutionChapter 6 Solutions
Physics for Scientists and Engineers with Modern Physics
Additional Science Textbook Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Physics: Principles with Applications
Essential Cosmic Perspective
Fundamentals Of Thermodynamics
University Physics Volume 2
Cosmic Perspective Fundamentals
- A motorist travels along a vertical circle with a diameter of 10.0 m. After one successful revolution, he notices that his speed at the bottom of the pathway is 6.50 m/s. The mass of the motorists is 70.0 kg. What apparent weight would he feel?arrow_forwardA body of mass 10 kg, is moving with a velocity of 5 m/s in a circle of radius 5 m, what is the centripetal acceleration of the body? A body of weight 20 N, mass 2 kg is moving in vertical circular motion with the help of a string of radius 1 m and with a velocity of 2 m/s. What is the tension in the string at the lowest point?arrow_forwardA) Sammy is driving a 1575 kg car at 121km/h in a horizontal plane around a banked curve with a radius of 102m. What is the total force of the road on his car during the turn? Also have a FBD diagram. B) If the curve was unbanked, would that change the answer? why?arrow_forward
- A tram of mass of 106 kg, runs at a speed of 60 kmph along an unbanked circular track having a radius of 20m. What is responsible for providing the tram with the required centripetal force, the rails or its engine? Also, find the angle of banking to prevent the rail from wearing out.arrow_forwardEngineers who design roads typically “bank” (incline) curves in such a way that a car traveling at the recommended speed does not have to rely on friction between its tires and the road in order to round the curve. Suppose the radius of curvature of a road segment is 55 m, and the recommended speed is 45 km/hr. At what angle should the curve be banked?arrow_forwardA car with a mass of 1000kg travels around a banked curve of radius 40m with a speed of 27m/s. In the absence of friction, what are the values of the horizontal and vertical components of the normal force?arrow_forward
- a 0.25 kg stone tied to a rope is swung to make a circular motion in a vertical plane . If the circle is of radius 300cm, what is the minimum uniform speed of the stone that will keep the rope tautarrow_forwardA merry-go-round has a 5-m radius and rotates with a 10-s period. If one “gee” is the gravitational force/mass experienced by a person standing still on the earth, how many gees are felt by a person walking from the center toward the rim of the merry-go-round at velocity 1 m/s in a straight line, due to the Coriolis pseudoforce?arrow_forwardAssume that the box and disk each have mass m, the top of the incline is at height h, and the angle between the incline and the ground is θ (i.e., the incline is at an angle θ above the horizontal). Also, let the radius of the disk be R. How much sooner does the box reach the bottom of the incline than the disk?Express your answer in terms of some or all of the variables m, h, θ, and R, as well as the acceleration due to gravity g.arrow_forward
- An airplane is flying in a horizontal circle at a speed of 480 km/h. If its wings are tilted at angle u = 40to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is provided entirely by an “aerodynamic lift” that is perpendicular to the wing surface.arrow_forwardHow much force does the seat push up on a 80kg pilot as he pulls out of a vertical loop of radius 310 meters at a speed of 97m/s?arrow_forwardA heavy ball of mass 1.00 kg is whirled at a constant speed of 2.00 ms−1 on the end of a string in a horizontal circle of radius 1.50 m. The tension in the string during exactly one revolution isarrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON