A student builds and calibrates an accelerometer, which she uses to determine the speed of her car around a certain highway curve. The accelerometer is a simple pendulum with a protractor which she attaches to the roof of her car. Her friend observes that the pendulum hangs at an angle of 15° from the vertical when the car has a speed of 23.0 m s'. (a) What is the centripetal acceleration of the car rounding the curve? (b) What is the radius of the curve? (c) What is the speed of the car if the deflection is 9.0°, while rounding the same curve?

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter4: Motion In Two And Three Dimensions
Section: Chapter Questions
Problem 64P: A runner taking part in the 200-m dash must run around the end of a track that has a circular arc...
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Full solution for whole qn pls Answers are a) 2.63ms-2 b) 201m c)17.7m/s
A student builds and calibrates an accelerometer, which she uses to determine the speed of her
car around a certain highway curve. The accelerometer is a simple pendulum with a protractor
which she attaches to the roof of her car. Her friend observes that the pendulum hangs at an
angle of 15° from the vertical when the car has a speed of 23.0 m s'.
(a)
What is the centripetal acceleration of the car rounding the curve?
(b)
What is the radius of the curve?
(c)
What is the speed of the car if the deflection is 9.0°, while rounding the same curve?
Transcribed Image Text:A student builds and calibrates an accelerometer, which she uses to determine the speed of her car around a certain highway curve. The accelerometer is a simple pendulum with a protractor which she attaches to the roof of her car. Her friend observes that the pendulum hangs at an angle of 15° from the vertical when the car has a speed of 23.0 m s'. (a) What is the centripetal acceleration of the car rounding the curve? (b) What is the radius of the curve? (c) What is the speed of the car if the deflection is 9.0°, while rounding the same curve?
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