A drum rotates around its central axis at an angular velocity of 12.60 rad/s. If the drum then slows at a constant rate of 4.20 rad/s2.
(a) how much time does it take?
(b) through what angle does it rotate in coming to rest (3.0s , 18.9 rad)
a) The angular speed of the drum at any time is given as follows:
where . When it comes to rest . The corresponding time is then:
b) The radial distance is:
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