Question

A centrifuge takes 100 s to spin up with constant angular acceleration (α) from rest to...

  1. A centrifuge takes 100 s to spin up with constant angular acceleration (α) from rest to its final angular speed of 1,875 (rad/s).
  1. What is the angular acceleration (in rad/s2) of the centrifuge as it spins up?

(Hint: use relationship between angular velocity and angular acceleration)

            (ii)       How many revolutions does the centrifuge make as it goes from rest to its final

                        angular speed? (Hint: use relationship between angular displacement and

                        angular acceleration, and noting that one revolution = 2 rads)

  1. (i) 3.33 (rad/s2)     (ii) 149 revolutions
  2. (i) 1.87 (rad/s2)     (ii) 21.55 x 104 revolutions
  3. (i) 43.01 (rad/s2)   (ii) 0.22 x 102 revolutions
  4. (i) 18.75 (rad/s2)   (ii) 1.49 x 104 revolutions
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