COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 8, Problem 125QAP
To determine
(a)
To determine
(b)
Angular velocity after two minutes
To determine
(c)
g force experienced by the person
To determine
(d)
Time takes to reach
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. A centrifuge will be used to give astronauts a gravity “spin-up” for one hour per day while on Mars. If thecentrifuge begins at rest and increases to 18 revolutions per minute. Find (a) the angular acceleration and (b)the final angular velocity in rpm.
Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. A trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness.
(a)If a human centrifuge has a radius of 5.09 m, what angular speed (in rad/s) results in a centripetal acceleration of 9g?
(b)What linear speed (in m/s) would a person in the centrifuge have at this acceleration?
A centrifuge in a medical laboratory rotates at an angular speed of 3,450 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge.
Chapter 8 Solutions
COLLEGE PHYSICS
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