Question

The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350000 rpmrpm. These drills, along with ultrasonic dental drills, are the fastest turbines in the world-far exceeding the angular speeds of jet engines. Suppose a drill starts at rest and comes up to operating speed in 2.0 ss .

Find the angular acceleration produced by the drill, assuming it to be constant.   

How many revolutions does the drill bit make as it comes up to speed?

Answer 1