Answered: (1) A centrifuge accelerates uniformly…

(1) A centrifuge accelerates uniformly from rest to 15,000 rpm in 240 s. Through how many revolutions did it turn in this time?

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 16PE: Olympic ice skaters are able to spin at about 5 rev/s. (a) What is their angular velocity in radians...

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Question

Number 18

lar rubber
is he ratio cf their angular velocities, w1/w,?
with it at their outer edges.
8-2 snd -3 Constant Angular Acceleration; Rolling
17. (I) An automobile engine slows down from 3500 rpm to
1200 rpm in 2.5 s. Calculate (a) its angular acceleration,
assumed constant, and (b) the total number of revolutions
the engine makes in this time.
18. (I) A centrifuge accelerates uniformly from rest to 15,000 rpm
in 240 s. Through how many revolutions did it turn in this
time?
19. (I) Pilots can be tested for the stresses of flying high-speed
jets in a whirling “human centrifuge," which takes 1.0 min
to turn through 23 complete revolutions before reaching
its final speed. (a) What was its angular acceleration
nal angular
(assumed constant), and (b) what wa
speed in rpm?
nning at
ID A cooling fan is t

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Question 2
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