Physics, 17.04.2020 02:54 aedelfrance9250
The drill used by most dentists today is powered by a smallair-turbine that can operate at angular speeds of 350000{\rm rpm}. These drills, along with ultrasonic dental drills, are the fastest turbines in the world-far exceeding the angularspeeds of jet engines. Suppose a drill starts at rest and comes upto operating speed in 1.9 s.
Find the angular acceleration produced by thedrill, assuming it to be constant.
α=
How many revolutions does the drill bit makeas it comes up to speed?
Answers: 3
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