Rpm Dental
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Angular Acceleration problem, Seeking help. Show me a method to solve this.?
The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350000 rpm. 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 2.1 s.
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?
angular acceleration = (change in angular velocity)/time
= [(350000 revs/min - 0 revs/min)/(60s/min)*(2*pi rad/rev)]/(2.1 sec)
answer is in radians/s^2
You'll need to carry out the math since I don't have my calculator.
Hope this helps
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Tags: rpm dental drill, health, rpm dental, medical
June 17th, 2009 in
Dental Supplies