A disk rotates about its central axis starting from rest and accelerate 3.80 rev/s; 80.0 revolutions later, its angular speed is 21.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 80.0 revolutions, (c) the time required to reach the 8.80 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 8.80 rev/s angular speed. (a) Number (b) Number (c) Number (d) Number Unit Unit Unit Unit 0000
A disk rotates about its central axis starting from rest and accelerate 3.80 rev/s; 80.0 revolutions later, its angular speed is 21.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 80.0 revolutions, (c) the time required to reach the 8.80 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 8.80 rev/s angular speed. (a) Number (b) Number (c) Number (d) Number Unit Unit Unit Unit 0000
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Transcribed Image Text:A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at
8.80 rev/s; 80.0 revolutions later, its angular speed is 21.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to
complete the 80.0 revolutions, (c) the time required to reach the 8.80 rev/s angular speed, and (d) the number of revolutions from rest
until the time the disk reaches the 8.80 rev/s angular speed.
(a) Number i
(b) Number i
(c) Number i
(d) Number
Unit
Unit
Unit
Unit
100
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