A centrifuge in a medical laboratory rotates at a rotational speed of 3600 rev/min, When switched off, it rotates 50.0 times at a constant angular acceleration before coming to rest. a) Determine the initial angular speed of the centrifuge. b) Determine the angle (in radians) through which the centrifuge rotates before coming to rest. c) Calculate the constant angular acceleration of the centrifuge. d) Calculate the time necessary for the centrifuge to come to rest.
- print Print
- list Cite
Expert Answers
Valentin Bogatu
| Certified Educator
calendarEducator since 2013
write455 answers
starTop subjects are Science, Math, and History
a) The initial angular speed is simply
`omega_0 = 2*pi*F =2*pi*3600 rad/min =2*pi*3600/60 (rad)/(sec)=`
` =120*pi (rad)/(sec) ~~377 (rad)/(sec)`
The initial angular speed is `120*pi` rad/sec
b)
The centrifuge does 50 complete rotations before it stops. One complete rotation means an angle of `2*pi`...
(The entire section contains 132 words.)
Unlock This Answer Now
Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.
Related Questions
- What angular speed is needed for a centrifuge to produce an acceleration of 650 times the...
- 1 Educator Answer
- An ultracentrifuge accelerates from rest to 100,000 rpm in 2.50 min. (a) What is its angular...
- 1 Educator Answer
- Starting from rest, a 12-cm-diameter compact disk takes 3.0 s to reach its operating angular...
- 1 Educator Answer
- A DVD rotates from rest to an angular speed of 31.4 rad/s in a time of 0.892 seconds. A) What is...
- 1 Educator Answer
- What is the angular speed of Earth, in radians per second, as it rotates about its axis?
- 1 Educator Answer