College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 6, Problem 27PE
(a) What is the radius of a bobsled turn banked at 75.0° and taken at 30.0 m/s, assuming it is ideally banked?
(b) Calculate the centripetal acceleration.
(c) Does this acceleration seem large to you?
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A 1500-kg car makes a horizontal turn 230m in radius at a velocity of 80 km/hr.
(a) How much centripetal force is required?
(b) What is the centripetal acceleration of the car?
(a) What is the radius of a bobsled turn banked at 77º and taken at 31.0 m/s, assuming it is ideally
banked?
Enter to 3 significant figures
r = 331.03
(b) Calculate the centripetal acceleration.
Enter to 3 significant figures
ac 2.92
X√ m
ac
g
(c) Does this acceleration seem large to you? Hint: try expressing the quantity as a multiple of g.
Calculate the ratio of the acceleration compared to g. How does the acceleration compare to g?
Enter to 3 significant figures
√
0.298
m/s²
A race car rounds a curve at 50 m/s. The radius of the curve is 416 m, and the car's mass is 650 kg. (Assume the car's speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.)
(a) What is the car's (centripetal) acceleration? m/s2What is it in g's? g(b) What is the centripetal force acting on the car? N
Chapter 6 Solutions
College Physics
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