Pilots can be tested for the stresses of flying high- speed jets in a whirling "human centrifuge," which takes 1.3 min to turn through 24 complete revolutions before reaching its final speed. Part A What was its angular acceleration (assumed constant)? Express your answer using two significant figures. ? rev/min? Submit Request Answer Part B What was its final angular speed in rpm? Express your answer using two significant figures. B) ? rpm

Pilots can be tested for the stresses of flying high- speed jets in a whirling "human centrifuge," which takes 1.3 min to turn through 24 complete revolutions before reaching its final speed. Part A What was its angular acceleration (assumed constant)? Express your answer using two significant figures. ? rev/min? Submit Request Answer Part B What was its final angular speed in rpm? Express your answer using two significant figures. B) ? rpm

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And Gravitation

Section: Chapter Questions

Problem 20P: Human centrifuges are used to train military pilots and astronauts in preparation for high-g...

See similar textbooks

Similar questions

Explain why centripetal acceleration changes the direction of velocity in circular motion but not its magnitude.
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 4.50 m, what angular speed results in a centripetal acceleration of 9g? (b) What linear speed would a person in the centrifuge have at this acceleration?
Check Your Understanding A centrifuge used in DNA extraction spins at a maximum rate of 7000 rpm, producing a “g-force on the sample that is 6000 times the force of gravity. If the centrifuge takes 10 seconds to come to rest from the maximum spin rate: (a) What Is the angular acceleration of the centrifuge? (b) What is the angular displacement of the centrifuge during this time?
What is the average speed in mi/h of a person at the equator as a result of the Earths rotation? (Take the radius of the Earth to be RE = 4000 mi.)
A track star runs a 400-m race on a 400-m circular track in 45 s. What is his angular velocity assuming a constant speed?
An ice skater is preparing for a jump with turns and has his arms extended. His moment of inertia is 1.8kgm2 while his arms are extended, and he is spinning at 0.5 rev/s. If he launches himself into the air at 9.0 m/s at an angle of 45 with respect to the ice, how many revolutions can he execute while airborne if his moment of inertia in the air is 0.5kgm2 ?
With the aid of a string, a gyroscope is accelerated from rest to 32 rad/s in 0.40 s under a constant angular acceleration. (a) What is its angular acceleration in rad/s2 ? (b) How many revolutions does it go through in the process?
(a) What is the angular speed of the second hand of a clock? (b) What is the direction of as you view a clock hanging on a vertical wall? (c) What is the magnitude of the angular acceleration vector of the second hand?
Pilots can be tested for the stresses of flying high-speed jets in a whirling "human centrifuge," which takes 1.1 min to turn through 22 complete revolutions before reaching its final speed. a)What was its angular acceleration (assumed constant)? b)What was its final angular speed in rpm?
If a centrifuge has an inital angular velocity of 20 rotations per second and and a constant angular acceleration of 15 rad/s2 how fast is it rotating after 25 rotations in rotations per second.
A centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min, clockwise (when viewed from above). When switched off, it rotates through 54.0 revolutions before coming to rest. Assuming it is constant, what is the magnitude of angular acceleration (in rad/s)? rad/s? What is the direction of the angular acceleration (again, when viewed from above)? O clockwise O counterclockwise O The magnitude is zero.
When a fan is turned off, its angular speed decreases from 168 rpm to 64.0 rpm in 6.08 s. A) what is the angukar acceleration of the fan? B) How fast the edges of the blades are moving (in m/s) at time 6.08 s, if they are 86.0 cm long?