The drill used by most dentists today is powered by a small air-turbine that can

Question

The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 346,800 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 0.6 s. (a) Find the angular acceleration produced by the drill, assuming it to be constant. rev/s2 (b) How many revolutions does the drill bit make as it comes up to speed? rev

Explanation / Answer

angular acceleration =346,800 rpm/.6*60 =9633.33 b>>>1/2*a*t^2 1734

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.