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23 Nov 2019
In a Beams ultracentrifuge, a 19.5 cm long rotor is suspendedmagnetically in a vacuum. Since there is no mechanical connectionto the rotor, the only friction is the air resistance due to thefew air molecules in the vacuum. If the rotor is spinning with anangular speed of 4.8 105 rad/s and the driving force is turned off,its spinning slows down at an angular rate of 0.39 rad/s2.
(a) For a point at the end of the rotor, find the initialspeed.
answer is 0.936 e5 m/s
(b) For a point at the end of the rotor, find the tangentialacceleration component.
answer is 0.0761 m/s2
(c) For a point at the end of the rotor, find the maximum radialacceleration component.
answer is 4.49e+10m/s2
In a Beams ultracentrifuge, a 19.5 cm long rotor is suspendedmagnetically in a vacuum. Since there is no mechanical connectionto the rotor, the only friction is the air resistance due to thefew air molecules in the vacuum. If the rotor is spinning with anangular speed of 4.8 105 rad/s and the driving force is turned off,its spinning slows down at an angular rate of 0.39 rad/s2.
(a) For a point at the end of the rotor, find the initialspeed.
answer is 0.936 e5 m/s
(b) For a point at the end of the rotor, find the tangentialacceleration component.
answer is 0.0761 m/s2
(c) For a point at the end of the rotor, find the maximum radialacceleration component.
answer is 4.49e+10m/s2
Trinidad TremblayLv2
23 Nov 2019
