COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 5, Problem 32QAP
To determine
The minimum radius of curvature of an unbanked on-ramp for a typical freeway.
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COLLEGE PHYSICS
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- You are asked to design an airplane propeller to turn at 2400 rpm. The forward air speed of the plane is to be 75 m/s and the speed of the tips of the propeller blades must not exceed 270 m/s. a) What is the maximum radius the propeller can have? b) With this radius, what is the acceleration of the propeller tip?arrow_forwardYou are rounding a curve on the road. The speed limit is 50mi/hr and the radius of curvature of the road is 200m. Your car is 1500kg. a) What must be the bank angle of the road for you not to slide up or down the bank? b) What will be the angle for a truck of 2500kg?arrow_forward(a) What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29 km/h and the µs between tires and track is 0.32?arrow_forward
- A highway curve of a radius of 400 m is designed for traffic moving at a speed of 91.0 km/hr. What is the correct banking angle of the road?arrow_forward53 An old streetcar rounds a flat corner of radius 9.1 m, at 16 km/h. What angle with the vertical will be made by the loosely hanging hand straps?arrow_forwardMedical testing has established that the maximum acceleration a pilot can be subjected to without losing consciousness is approximately 5.00g. A pilot can avoid “blackout” at accelerations up to approximately 9.00g by wearing special “g-suits” that help keep blood pressure in the brain at a sufficient level. What is the minimum safe radius of curvature for the pilot wearing a g-suit and flying the F-15 in a horizontal circular loop at 658 km/h?arrow_forward
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- A golf ball is launched with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory and the time rate of change of the speed of the ball (a) just after launch and (b) at apex. Neglect aerodynamic drag. (a) Just after launch, determine the speed v of the ball, the total acceleration a of the ball, the normal component of acceleration an and the tangential component of acceleration at.arrow_forwardA car goes around a multilane roundabout in the United Kingdom. Assuming the ground is flat and the roundabout has a radius of 75m. How fast would a 1500kg car go around the roundabout if the cars tires have a coefficient of static friction with the ground is .95arrow_forwardA banked highway is designed for traffic moving at v = 96 km/h. The radius of the curve r = 311 m. a.)Write an equation for the tangent of the highway's angle of banking. Give your equation in terms of the radius of curvature r, the intended speed of the turn v, and the acceleration due to gravity g. b)What is the angle of banking of the highway? Give your answer in degrees.arrow_forward
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