The roller-coaster track shown is contained in a vertical plane. The portion of track between A and B is straight and horizontal, while the portions to the left of 4 and to the right of B have radii of curvature as indicated. A car is traveling at a speed of 72 km/h when the brakes are suddenly applied, causing the wheels of the car to slide on the track ( 0.20). Determine the initial deceleration of the car if the brakes are applied as the car (a) has almost reached 4, (b) is traveling between A and B, (c) has just passed B.

International Edition---engineering Mechanics: Statics, 4th Edition
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ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.11P: Solve Prob. 7.10 assuming that the pick-up truck has front-wheel drive.
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applied mechanics 2

PROBLEM 12.47
p- 30 m
The roller-coaster track shown is contained in a vertical plane.
The portion of track between A and B is straight and horizontal,
while the portions to the left of .4 and to the right of B have radii
of curvature as indicated. A car is traveling at a speed of
72 km/h when the brakes are suddenly applied, causing the
wheels of the car to slide on the track (4 0.20). Determine
the initial deceleration of the car if the brakes are applied as the
car (a) has almost reached A, (b) is traveling between A and B,
(c) has just passed B.
p- 45 m
Transcribed Image Text:PROBLEM 12.47 p- 30 m The roller-coaster track shown is contained in a vertical plane. The portion of track between A and B is straight and horizontal, while the portions to the left of .4 and to the right of B have radii of curvature as indicated. A car is traveling at a speed of 72 km/h when the brakes are suddenly applied, causing the wheels of the car to slide on the track (4 0.20). Determine the initial deceleration of the car if the brakes are applied as the car (a) has almost reached A, (b) is traveling between A and B, (c) has just passed B. p- 45 m
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