. A centrifuge turning at 20000 rpm is suddenly turned off. Before it comes to a stop, the centrifuge spins for 1500 revolutions. Calculate the angular acceleration of the centrifuge assuming it to be constant.
. A centrifuge turning at 20000 rpm is suddenly turned off. Before it comes to a stop, the centrifuge spins for 1500 revolutions. Calculate the angular acceleration of the centrifuge assuming it to be constant.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.
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Transcribed Image Text:Rotational Kinematics (use rotational kinematic equations)
2. A centrifuge turning at 20000 rpm is suddenly turned off. Before it comes to a
stop, the centrifuge spins for 1500 revolutions. Calculate the angular acceleration
of the centrifuge assuming it to be constant.
Page 3 of 4
Solution and Answer:
We first convert 20000 rpm to rad/s. In doing so we get
wo = 20000 rpm50 seconds) (1 revolution/
1 minute
2n radians
rad
= 2094.4 (use this value for the initial
angular velocity, wo)
1500 revolutions are equivalent to A8raa = 1500 rev x 2n = 9424.78 radians. (use
this value for the angular position, 0)
Now, given the initial angular velocity, wo final angular velocity, w and
angular position, 0, which of the given rotational kinematic equations are
you going to use for computing the angular acceleration, a? Show your
solution and answer for the
of the centrifuge.
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