COLLEGE PHYSICS
COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 3, Problem 30QAP
To determine

(a)

Marry and Kelly are running on 400m track side by side while taking turn both enter and leave at the same time

Find the difference in their centripetal acceleration.

To determine

(b)

Find the ratio of their centripetal acceleration.

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World-class female shorttrack speed skaters can cover the 500 m of a race in 45 s. The most challenging elements of the race are the turns, which are very tight, with a radius of approximately 11 m. Estimate the magnitude of the skater’s centripetal acceleration in a turn.
Formula One race cars are capable of remarkable accelerations when speeding up, slowing down, and turning corners. At one track, cars round a corner that is a segment of a circle of radius 95 m at a speed of 68 m/s. What is the approximate magnitude of the centripetal acceleration, in units of g?
If the speed of an object in uniform circular motion is tripled and the radial distance remains constant, then the magnitude of the centripital acceleration increases by what factor?

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